McKeown 2001

ID152
TitleUse of biological markers to validate self-reported dietary intake in a random sample of the European Prospective Investigation into Cancer United Kingdom Norfolk cohort
AuthorsMcKeown, N. M.; Day, N. E.; Welch, A. A.; Runswick, S. A.; Luben, R. N.; Mulligan, A. A.; McTaggart, A.; Bingham, S. A.
Year2001
JournalAm J Clin Nutr
Volume74
Issue2
Pages188-196
PubMed ID11470719
DOI

Subjects

IDParent IDDepthSubject groupPopulationCountryCountry codeEthnicityCohortHealth conditionSmoker proportionSupplement users excluded?GenderFemale proportionSizeAge meanAge SDAge minAge maxAge medianHeight meanHeight SDHeight minHeight maxHeight medianWeight meanWeight SDWeight minWeight maxWeight medianBMI meanBMI SDBMI minBMI maxBMI median
5070AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)HealthyNoFemale + Male60.314645.074.0
6155071All [by gender]Middle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)HealthyNoFemale + Male60.314645.074.0
5086152MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)HealthyNoMale0.05860.010.0175.06.083.010.027.03.0
5096152FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)HealthyNoFemale100.08858.010.0163.07.067.010.025.04.0
6165071All [by supplement]Middle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)HealthyNoFemale + Male60.314645.074.0
5126162Supplement nonusersMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)HealthyYesFemale + Male56.289
5105123Supplement nonusers - MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)HealthyYesMale0.039
5115123Supplement nonusers - FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)HealthyYesFemale100.050
6176162Supplement usersMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)HealthyNoFemale + Male66.757

Biomarker concentration values

IDParent IDDepthSubject groupPopulationCountryCountry codeCohortTime definitionBiospecimenAnalytical methodBiomarkerBiomarker detailMeasurement sizeDetected (nb)Detected (%)Detected only?Arithmethic meanArithmethic SDGeometric meanGeometric SDMinMin (detected)Percentile_05Percentile_10Percentile_25MedianPercentile_75Percentile_90Percentile_95MaxInterquartile rangeMean 95% CI lowerMean 95% CI upperGMean 95% CI lowerGMean 95% CI upperUnitConverted arithmetic meanConverted geometric meanConverted medianAdjustment typeAdjusted onRegressed onExpressed as
64850MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Urine, 24-hKjeldahl methodNitrogen5712.82.08.616.8g/day12800.0 mg/dayCrude
64860MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Urine, 24-hAtomic emission spectrometry (AES)Potassium5782.016.041.0124.0mmol/day80848.7 umol/dayCrude
64870MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Urine, 24-hAtomic emission spectrometry (AES)Sodium57173.043.0101.0303.0mmol/day170570.9 umol/dayCrude
64890MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Plasma, fastingFluorometryVitamin C4858.017.520.089.5umol/L58000.0 nmol/LCrude
64910FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Urine, 24-hKjeldahl methodNitrogen779.91.96.716.0g/day9900.0 mg/dayCrude
64920FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Urine, 24-hAtomic emission spectrometry (AES)Potassium7769.016.037.0131.0mmol/day68031.2 umol/dayCrude
64930FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Urine, 24-hAtomic emission spectrometry (AES)Sodium77131.033.073.0264.0mmol/day129160.7 umol/dayCrude
64940FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Plasma, fastingFluorometryVitamin C7065.220.015.5104.0umol/L65200.0 nmol/LCrude
64900Supplement nonusers - MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Plasma, fastingFluorometryVitamin C3955.016.320.087.0umol/L55000.0 nmol/LCrude
64950Supplement nonusers - FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Plasma, fastingFluorometryVitamin C5060.419.015.5104.0umol/L60400.0 nmol/LCrude

Intake values

IDParent IDDepthSubject groupPopulationCountryCountry codeCohortTime definitionIntake toolIntake food coverageIntake time coverageIntake assessmentCompoundCompound detailSupplement intakes included?Measurement sizeDetected (nb)Detected (%)Detected only?Arithmethic meanArithmethic SDGeometric meanGeometric SDMinMin (detected)Percentile_05Percentile_10Percentile_25MedianPercentile_75Percentile_90Percentile_95MaxInterquartile rangeMean 95% CI lowerMean 95% CI upperGMean 95% CI lowerGMean 95% CI upperUnitConverted arithmetic meanConverted geometric meanConverted medianAdjustment typeAdjusted onRegressed onExpressed as
64150MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Energy589.251.75MJ/day2209.3 kcal/dayCrude
64160MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins5882.014.0g/day80848.7 mg/dayCrude
64170MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium583.410.7g/day3410.0 mg/dayCrude
64180MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium583.370.8g/day3370.0 mg/dayCrude
64190MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)beta-CaroteneYes581880.0967.0ug/day1.9 mg/dayCrude
64200MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes5881.043.0mg/day81.0 mg/dayCrude
64210MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin EYes588.04.0mg/day8.0 mg/dayCrude
64290MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Energy588.892.01MJ/day2123.3 kcal/dayCrude
64300MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins5882.016.0g/day80848.7 mg/dayCrude
64310MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium583.460.7g/day3460.0 mg/dayCrude
64320MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium583.140.8g/day3140.0 mg/dayCrude
64330MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)beta-CaroteneYes581853.0946.0ug/day1.9 mg/dayCrude
64340MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes5874.036.0mg/day74.0 mg/dayCrude
64350MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin EYes588.04.0mg/day8.0 mg/dayCrude
64430MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Energy589.071.72MJ/day2166.3 kcal/dayCrude
64440MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins5882.021.0g/day80848.7 mg/dayCrude
64450MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium583.430.6g/day3430.0 mg/dayCrude
64460MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium583.260.8g/day3260.0 mg/dayCrude
64470MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)beta-CaroteneYes581867.0822.0ug/day1.9 mg/dayCrude
64480MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes5877.034.0mg/day77.0 mg/dayCrude
64490MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin EYes588.04.0mg/day8.0 mg/dayCrude
64570MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Energy589.362.74MJ/day2235.6 kcal/dayCrude
64580MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteins5889.018.0g/day87750.4 mg/dayCrude
64590MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassium583.980.8g/day3980.0 mg/dayCrude
64600MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodium583.070.8g/day3070.0 mg/dayCrude
64610MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)beta-CaroteneYes583056.01259.0ug/day3.1 mg/dayCrude
64620MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYes58118.053.0mg/day118.0 mg/dayCrude
64630MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin EYes5812.06.0mg/day12.0 mg/dayCrude
64710MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Energy589.12.86MJ/day2173.5 kcal/dayCrude
64720MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteins5888.024.0g/day86764.4 mg/dayCrude
64730MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassium583.940.8g/day3940.0 mg/dayCrude
64740MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodium582.920.9g/day2920.0 mg/dayCrude
64750MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)beta-CaroteneYes582780.01170.0ug/day2.8 mg/dayCrude
64760MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYes58111.041.0mg/day111.0 mg/dayCrude
64770MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin EYes5811.07.0mg/day11.0 mg/dayCrude
64220FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Energy887.091.62MJ/day1693.4 kcal/dayCrude
64230FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins8865.014.0g/day64087.3 mg/dayCrude
64240FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium883.010.7g/day3010.0 mg/dayCrude
64250FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium882.420.6g/day2420.0 mg/dayCrude
64260FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)beta-CaroteneYes882061.01656.0ug/day2.1 mg/dayCrude
64270FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes88100.055.0mg/day100.0 mg/dayCrude
64280FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin EYes887.03.0mg/day7.0 mg/dayCrude
64360FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Energy887.111.67MJ/day1698.2 kcal/dayCrude
64370FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins8866.015.0g/day65073.3 mg/dayCrude
64380FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium883.090.8g/day3090.0 mg/dayCrude
64390FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium882.470.7g/day2470.0 mg/dayCrude
64400FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)beta-CaroteneYes882178.01847.0ug/day2.2 mg/dayCrude
64410FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes8890.054.0mg/day90.0 mg/dayCrude
64420FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin EYes887.04.0mg/day7.0 mg/dayCrude
64500FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Energy887.111.54MJ/day1698.2 kcal/dayCrude
64510FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins8866.013.0g/day65073.3 mg/dayCrude
64520FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium883.050.7g/day3050.0 mg/dayCrude
64530FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium882.450.6g/day2450.0 mg/dayCrude
64540FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)beta-CaroteneYes882099.01570.0ug/day2.1 mg/dayCrude
64550FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes8895.048.0mg/day95.0 mg/dayCrude
64560FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin EYes887.03.0mg/day7.0 mg/dayCrude
64640FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Energy887.782.65MJ/day1858.2 kcal/dayCrude
64650FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteins8880.024.0g/day78876.7 mg/dayCrude
64660FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassium883.750.9g/day3750.0 mg/dayCrude
64670FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodium882.631.0g/day2630.0 mg/dayCrude
64680FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)beta-CaroteneYes882978.01322.0ug/day3.0 mg/dayCrude
64690FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYes88136.057.0mg/day136.0 mg/dayCrude
64700FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin EYes8810.06.0mg/day10.0 mg/dayCrude
64780FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Energy887.742.52MJ/day1848.7 kcal/dayCrude
64790FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteins8878.022.0g/day76904.8 mg/dayCrude
64800FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassium883.710.9g/day3710.0 mg/dayCrude
64810FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodium882.751.3g/day2750.0 mg/dayCrude
64820FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)beta-CaroteneYes882887.01438.0ug/day2.9 mg/dayCrude
64830FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYes88132.065.0mg/day132.0 mg/dayCrude
64840FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin EYes8810.06.0mg/day10.0 mg/dayCrude

Correlation values

IDIntake IDExcretion IDSubject groupPopulationCountryCountry codeCohortIntake Time definitionIntake assessmentIntakeIntake detailSupplement intakes included?Intake Arithmetic meanIntake Geometric meanIntake MedianIntake UnitIntake Adjusted onBiomarker Time definitionBiological specimenBiomarker Experimental methodBiomarkerBiomarker detailBiomarker Arithmetic meanBiomarker Geometric meanBiomarker MedianBiomarker UnitBiomarker Adjusted onCorrelation sizeCorrelation typeCorrelation valueCorrelation 95% CI lowerCorrelation 95% CI upperCorrelation p-valueSignificant?Measurement adjustmentDeattenuated?Covariates
602464966516AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteinsg/dayUrine, 24-hKjeldahl methodNitrogeng/day134Spearman0.67 Unspecified
602564976517AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Potassiummmol/day134Spearman0.55 Unspecified
602664986518AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Sodiummmol/day134Spearman0.48 Unspecified
602764996519AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYesmg/dayPlasma, fastingFluorometryVitamin Cumol/L118Spearman0.54 Unspecified
603965006516AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteinsg/dayUrine, 24-hKjeldahl methodNitrogeng/day134Spearman0.57 Unspecified
604065016517AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Potassiummmol/day134Spearman0.51 Unspecified
604165026518AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Sodiummmol/day134Spearman0.48 Unspecified
604265036519AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYesmg/dayPlasma, fastingFluorometryVitamin Cumol/L118Spearman0.44 Unspecified
605465046516AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteinsg/dayUrine, 24-hKjeldahl methodNitrogeng/day134Spearman0.66 Unspecified
605565056517AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Potassiummmol/day134Spearman0.58 Unspecified
605665066518AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Sodiummmol/day134Spearman0.48 Unspecified
605765076519AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYesmg/dayPlasma, fastingFluorometryVitamin Cumol/L118Spearman0.53 Unspecified
606965086516AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteinsg/dayUrine, 24-hKjeldahl methodNitrogeng/day134Spearman0.29 Unspecified
607065096517AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Potassiummmol/day134Spearman0.32 Unspecified
607165106518AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Sodiummmol/day134Spearman0.2 Unspecified
607265116519AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYesmg/dayPlasma, fastingFluorometryVitamin Cumol/L118Spearman0.42 Unspecified
608465126516AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteinsg/dayUrine, 24-hKjeldahl methodNitrogeng/day134Spearman0.21 Unspecified
608565136517AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Potassiummmol/day134Spearman0.34 Unspecified
608665146518AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodiumg/dayUrine, 24-hAtomic emission spectrometry (AES)Sodiummmol/day134Spearman0.18 Unspecified
608765156519AllMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYesmg/dayPlasma, fastingFluorometryVitamin Cumol/L118Spearman0.39 Unspecified
601464166485MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins82.0g/dayUrine, 24-hKjeldahl methodNitrogen12.8g/day57Spearman0.48 Unspecified
601564176486MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium3.41g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium82.0mmol/day57Spearman0.61 Unspecified
601664186487MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium3.37g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium173.0mmol/day57Spearman0.27 Unspecified
601764206489MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes81.0mg/dayPlasma, fastingFluorometryVitamin C58.0umol/L48Spearman0.42 Unspecified
602964306485MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins82.0g/dayUrine, 24-hKjeldahl methodNitrogen12.8g/day57Spearman0.42 Unspecified
603064316486MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium3.46g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium82.0mmol/day57Spearman0.55 Unspecified
603164326487MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium3.14g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium173.0mmol/day57Spearman0.43 Unspecified
603264346489MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes74.0mg/dayPlasma, fastingFluorometryVitamin C58.0umol/L48Spearman0.35 Unspecified
604464446485MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins82.0g/dayUrine, 24-hKjeldahl methodNitrogen12.8g/day57Spearman0.51 Unspecified
604564456486MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium3.43g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium82.0mmol/day57Spearman0.61 Unspecified
604664466487MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium3.26g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium173.0mmol/day57Spearman0.39 Unspecified
604764486489MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes77.0mg/dayPlasma, fastingFluorometryVitamin C58.0umol/L48Spearman0.41 Unspecified
605964586485MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteins89.0g/dayUrine, 24-hKjeldahl methodNitrogen12.8g/day57Spearman0.13 Unspecified
606064596486MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassium3.98g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium82.0mmol/day57Spearman0.24 Unspecified
606164606487MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodium3.07g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium173.0mmol/day57Spearman0.04 Unspecified
606264626489MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYes118.0mg/dayPlasma, fastingFluorometryVitamin C58.0umol/L48Spearman0.32 Unspecified
607464726485MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteins88.0g/dayUrine, 24-hKjeldahl methodNitrogen12.8g/day57Spearman0.12 Unspecified
607564736486MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassium3.94g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium82.0mmol/day57Spearman0.26 Unspecified
607664746487MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodium2.92g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium173.0mmol/day57Spearman0.04 Unspecified
607764766489MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYes111.0mg/dayPlasma, fastingFluorometryVitamin C58.0umol/L48Spearman0.34 Unspecified
601964236491FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins65.0g/dayUrine, 24-hKjeldahl methodNitrogen9.9g/day77Spearman0.51 Unspecified
602064246492FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium3.01g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium69.0mmol/day77Spearman0.41 Unspecified
602164256493FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium2.42g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium131.0mmol/day77Spearman0.23 Unspecified
602264276494FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes100.0mg/dayPlasma, fastingFluorometryVitamin C65.2umol/L70Spearman0.56 Unspecified
603464376491FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins66.0g/dayUrine, 24-hKjeldahl methodNitrogen9.9g/day77Spearman0.37 Unspecified
603564386492FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium3.09g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium69.0mmol/day77Spearman0.42 Unspecified
603664396493FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium2.47g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium131.0mmol/day77Spearman0.11 Unspecified
603764416494FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes90.0mg/dayPlasma, fastingFluorometryVitamin C65.2umol/L70Spearman0.48 Unspecified
604964516491FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Proteins66.0g/dayUrine, 24-hKjeldahl methodNitrogen9.9g/day77Spearman0.48 Unspecified
605064526492FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Potassium3.05g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium69.0mmol/day77Spearman0.48 Unspecified
605164536493FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Sodium2.45g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium131.0mmol/day77Spearman0.17 Unspecified
605264556494FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CYes95.0mg/dayPlasma, fastingFluorometryVitamin C65.2umol/L70Spearman0.56 Unspecified
606464656491FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteins80.0g/dayUrine, 24-hKjeldahl methodNitrogen9.9g/day77Spearman0.2 Unspecified
606564666492FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassium3.75g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium69.0mmol/day77Spearman0.28 Unspecified
606664676493FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodium2.63g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium131.0mmol/day77Spearman0.08 Unspecified
606764696494FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYes136.0mg/dayPlasma, fastingFluorometryVitamin C65.2umol/L70Spearman0.41 Unspecified
607964796491FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Proteins78.0g/dayUrine, 24-hKjeldahl methodNitrogen9.9g/day77Spearman0.1 Unspecified
608064806492FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Potassium3.71g/dayUrine, 24-hAtomic emission spectrometry (AES)Potassium69.0mmol/day77Spearman0.29 Unspecified
608164816493FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Sodium2.75g/dayUrine, 24-hAtomic emission spectrometry (AES)Sodium131.0mmol/day77Spearman0.13 Unspecified
608264836494FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CYes132.0mg/dayPlasma, fastingFluorometryVitamin C65.2umol/L70Spearman0.39 Unspecified
601877676490Supplement nonusers - MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C55.0umol/L39Spearman0.41 Unspecified
603377686490Supplement nonusers - MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C55.0umol/L39Spearman0.35 Unspecified
604877696490Supplement nonusers - MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C55.0umol/L39Spearman0.41 Unspecified
606377706490Supplement nonusers - MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C55.0umol/L39Spearman0.33 Unspecified
607877716490Supplement nonusers - MalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C55.0umol/L39Spearman0.43 Unspecified
602377726495Supplement nonusers - FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C60.4umol/L50Spearman0.54 Unspecified
603877736495Supplement nonusers - FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C60.4umol/L50Spearman0.42 Unspecified
605377746495Supplement nonusers - FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C60.4umol/L50Spearman0.53 Unspecified
606877756495Supplement nonusers - FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C60.4umol/L50Spearman0.46 Unspecified
608377766495Supplement nonusers - FemalesMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin C60.4umol/L50Spearman0.45 Unspecified
602877776520Supplement nonusersMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin Cumol/L89Spearman0.52 Unspecified
604377786520Supplement nonusersMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin Cumol/L89Spearman0.4 Unspecified
605877796520Supplement nonusersMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Dietary record (7-day)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin Cumol/L89Spearman0.49 Unspecified
607377806520Supplement nonusersMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin Cumol/L89Spearman0.44 Unspecified
608877816520Supplement nonusersMiddle-aged participants in a dietary validation studyUnited KingdomGBEPIC-Norfolk (European Prospective Investigation into Cancer and Nutrition)Food Frequency Questionnaire (FFQ)Vitamin CNomg/dayPlasma, fastingFluorometryVitamin Cumol/L89Spearman0.45 Unspecified

Reproducibility values

No data available