Validity of a Dietary Questionnaire Assessed by Comparison With Multiple Weighed Dietary Records or 24-Hour Recalls

The authors evaluated the validity of a 152-item semiquantitative food frequency questionnaire (SFFQ) by comparing it with two 7-day dietary records (7DDRs) or up to 4 automated self-administered 24-hour recalls (ASA24s) over a 1-year period in the women's Lifestyle Validation Study (2010-2012)...

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Vydané v:	American journal of epidemiology Ročník 185; číslo 7; s. 570
Hlavní autori:	Yuan, Changzheng, Spiegelman, Donna, Rimm, Eric B, Rosner, Bernard A, Stampfer, Meir J, Barnett, Junaidah B, Chavarro, Jorge E, Subar, Amy F, Sampson, Laura K, Willett, Walter C
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	United States 01.04.2017
Predmet:	Diet - statistics & numerical data Diet Surveys - methods Diet Surveys - standards Female Humans Mental Recall Middle Aged Reproducibility of Results Surveys and Questionnaires - standards United States automated self-administered 24-hour recall nutrient validation 7-day dietary records reproducibility semiquantitative food frequency questionnaire
ISSN:	1476-6256, 1476-6256
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Shrnutí:	The authors evaluated the validity of a 152-item semiquantitative food frequency questionnaire (SFFQ) by comparing it with two 7-day dietary records (7DDRs) or up to 4 automated self-administered 24-hour recalls (ASA24s) over a 1-year period in the women's Lifestyle Validation Study (2010-2012), conducted among subgroups of the Nurses' Health Studies. Intakes of energy and 44 nutrients were assessed using the 3 methods among 632 US women. Compared with the 7DDRs, SFFQ responses tended to underestimate sodium intake but overestimate intakes of energy, macronutrients, and several nutrients in fruits and vegetables, such as carotenoids. Spearman correlation coefficients between energy-adjusted intakes from 7DDRs and the SFFQ completed at the end of the data-collection period ranged from 0.36 for lauric acid to 0.77 for alcohol (mean r = 0.53). Correlations of the end-period SFFQ were weaker when ASA24s were used as the comparison method (mean r = 0.43). After adjustment for within-person variation in the comparison method, the correlations of the final SFFQ were similar with 7DDRs (mean r = 0.63) and ASA24s (mean r = 0.62). These data indicate that this SFFQ provided reasonably valid estimates for intakes of a wide variety of dietary variables and that use of multiple 24-hour recalls or 7DDRs as a comparison method provided similar conclusions if day-to-day variation was taken into account.
Bibliografia:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	1476-6256 1476-6256
DOI:	10.1093/aje/kww104