PMID- 19888273
OWN - NLM
STAT- MEDLINE
DCOM- 20100309
LR  - 20191210
IS  - 1476-5640 (Electronic)
IS  - 0954-3007 (Linking)
VI  - 63 Suppl 4
DP  - 2009 Nov
TI  - A bivariate measurement error model for nitrogen and potassium intakes to 
      evaluate the performance of regression calibration in the European Prospective 
      Investigation into Cancer and Nutrition study.
PG  - S179-87
LID - 10.1038/ejcn.2009.80 [doi]
AB  - OBJECTIVES: Within the European Prospective Investigation into Cancer and 
      Nutrition (EPIC) study, the performance of 24-h dietary recall (24-HDR) 
      measurements as reference measurements in a linear regression calibration model 
      is evaluated critically at the individual (within-centre) and aggregate 
      (between-centre) levels by using unbiased estimates of urinary measurements of 
      nitrogen and potassium intakes. METHODS: Between 1995 and 1999, 1072 study 
      subjects (59% women) from 12 EPIC centres volunteered to collect 24-h urine 
      samples. Log-transformed questionnaire, 24-HDR and urinary measurements of 
      nitrogen and potassium intakes were analysed in a multivariate measurement error 
      model to estimate the validity of coefficients and error correlations in 
      self-reported dietary measurements. In parallel, correlations between means of 
      24-HDR and urinary measurements were computed. Linear regression calibration 
      models were used to estimate the regression dilution (attenuation) factors. 
      RESULTS: After adjustment for sex, centre, age, body mass index and height, the 
      validity coefficients for 24-HDRs were 0.285 (95% confidence interval: 0.194, 
      0.367) and 0.371 (0.291, 0.446) for nitrogen and potassium intakes, respectively. 
      The attenuation factors estimated in a linear regression calibration model were 
      0.368 (0.228, 0.508) for nitrogen and 0.500 (0.361, 0.639) for potassium intakes; 
      only the former was different from the estimate obtained using urinary 
      measurements in the measurement error model. The aggregate-level correlation 
      coefficients between means of urinary and 24-HDR measurements were 0.838 (0.637, 
      0.932) and 0.756 (0.481, 0.895) for nitrogen and potassium intakes, respectively. 
      CONCLUSIONS: This study suggests that 24-HDRs can be used as reference 
      measurements at the individual and aggregate levels for potassium intake, 
      whereas, for nitrogen intake, good performance is observed for between-centre 
      calibration, but some limitations are apparent at the individual level.
FAU - Ferrari, P
AU  - Ferrari P
AD  - Dietary Exposure Assessment Group, International Agency for Research on Cancer, 
      Lyon, France.
FAU - Roddam, A
AU  - Roddam A
FAU - Fahey, M T
AU  - Fahey MT
FAU - Jenab, M
AU  - Jenab M
FAU - Bamia, C
AU  - Bamia C
FAU - Ocke, M
AU  - Ocke M
FAU - Amiano, P
AU  - Amiano P
FAU - Hjartaker, A
AU  - Hjartaker A
FAU - Biessy, C
AU  - Biessy C
FAU - Rinaldi, S
AU  - Rinaldi S
FAU - Huybrechts, I
AU  - Huybrechts I
FAU - Tjonneland, A
AU  - Tjonneland A
FAU - Dethlefsen, C
AU  - Dethlefsen C
FAU - Niravong, M
AU  - Niravong M
FAU - Clavel-Chapelon, F
AU  - Clavel-Chapelon F
FAU - Linseisen, J
AU  - Linseisen J
FAU - Boeing, H
AU  - Boeing H
FAU - Oikonomou, E
AU  - Oikonomou E
FAU - Orfanos, P
AU  - Orfanos P
FAU - Palli, D
AU  - Palli D
FAU - Santucci de Magistris, M
AU  - Santucci de Magistris M
FAU - Bueno-de-Mesquita, H B
AU  - Bueno-de-Mesquita HB
FAU - Peeters, P H M
AU  - Peeters PH
FAU - Parr, C L
AU  - Parr CL
FAU - Braaten, T
AU  - Braaten T
FAU - Dorronsoro, M
AU  - Dorronsoro M
FAU - Berenguer, T
AU  - Berenguer T
FAU - Gullberg, B
AU  - Gullberg B
FAU - Johansson, I
AU  - Johansson I
FAU - Welch, A A
AU  - Welch AA
FAU - Riboli, E
AU  - Riboli E
FAU - Bingham, S
AU  - Bingham S
FAU - Slimani, N
AU  - Slimani N
LA  - eng
GR  - British Heart Foundation/United Kingdom
GR  - Cancer Research UK/United Kingdom
GR  - Department of Health/United Kingdom
GR  - Medical Research Council/United Kingdom
GR  - Wellcome Trust/United Kingdom
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Validation Study
PL  - England
TA  - Eur J Clin Nutr
JT  - European journal of clinical nutrition
JID - 8804070
RN  - 0 (Micronutrients)
RN  - N762921K75 (Nitrogen)
RN  - RWP5GA015D (Potassium)
SB  - IM
MH  - Adult
MH  - Aged
MH  - Calibration/*standards
MH  - *Diet
MH  - *Diet Records
MH  - Diet Surveys
MH  - Europe
MH  - Female
MH  - Humans
MH  - Linear Models
MH  - Logistic Models
MH  - Male
MH  - Micronutrients/administration & dosage/urine
MH  - Middle Aged
MH  - Nitrogen/*administration & dosage/urine
MH  - Potassium/*administration & dosage/urine
MH  - Prospective Studies
MH  - Reference Values
MH  - Reproducibility of Results
EDAT- 2009/11/06 06:00
MHDA- 2010/03/10 06:00
CRDT- 2009/11/06 06:00
PHST- 2009/11/06 06:00 [entrez]
PHST- 2009/11/06 06:00 [pubmed]
PHST- 2010/03/10 06:00 [medline]
AID - ejcn200980 [pii]
AID - 10.1038/ejcn.2009.80 [doi]
PST - ppublish
SO  - Eur J Clin Nutr. 2009 Nov;63 Suppl 4:S179-87. doi: 10.1038/ejcn.2009.80.