Bias in protein and potassium intake collected with 24-h recalls (EPIC-Soft) is rather comparable across European populations.
Eur J Nutr
; 51(8): 997-1010, 2012 Dec.
Article
em En
| MEDLINE
| ID: mdl-22143464
ABSTRACT
PURPOSE:
We investigated whether group-level bias of a 24-h recall estimate of protein and potassium intake, as compared to biomarkers, varied across European centers and whether this was influenced by characteristics of individuals or centers.METHODS:
The combined data from EFCOVAL and EPIC studies included 14 centers from 9 countries (n = 1,841). Dietary data were collected using a computerized 24-h recall (EPIC-Soft). Nitrogen and potassium in 24-h urine collections were used as reference method. Multilevel linear regression analysis was performed, including individual-level (e.g., BMI) and center-level (e.g., food pattern index) variables.RESULTS:
For protein intake, no between-center variation in bias was observed in men while it was 5.7% in women. For potassium intake, the between-center variation in bias was 8.9% in men and null in women. BMI was an important factor influencing the biases across centers (p < 0.01 in all analyses). In addition, mode of administration (p = 0.06 in women) and day of the week (p = 0.03 in men and p = 0.06 in women) may have influenced the bias in protein intake across centers. After inclusion of these individual variables, between-center variation in bias in protein intake disappeared for women, whereas for potassium, it increased slightly in men (to 9.5%). Center-level variables did not influence the results.CONCLUSION:
The results suggest that group-level bias in protein and potassium (for women) collected with 24-h recalls does not vary across centers and to a certain extent varies for potassium in men. BMI and study design aspects, rather than center-level characteristics, affected the biases across centers.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Rememoração Mental
/
Ingestão de Energia
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Proteínas Alimentares
/
Potássio na Dieta
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Comportamento Alimentar
Tipo de estudo:
Clinical_trials
/
Observational_studies
Limite:
Adult
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Female
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Humans
/
Male
País como assunto:
Europa
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article