Περίληψη:
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.
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.
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.
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.
Συγγραφείς:
Crispim, Sandra P.
Geelen, Anouk
de Vries, Jeanne H. M. and
Freisling, Heinz
Souverein, Olga W.
Hulshof, Paul J. M. and
Ocke, Marga C.
Boshuizen, Hendriek
Andersen, Lene F. and
Ruprich, Jiri
De Keizer, Willem
Huybrechts, Inge
Lafay,
Lionel
de Magistris, Maria S.
Ricceri, Fulvio
Tumino,
Rosario
Krogh, Vittorio
Bueno-de-Mesquita, H. Bas
Beulens,
Joline W. J.
Boutron-Ruault, Marie-Christine
Naska, Androniki
and Crowe, Francesca L.
Boeing, Heiner
McTaggart, Alison and
Kaaks, Rudolf
van't Veer, Pieter
Slimani, Nadia
