Frances E. Thompson|Douglas Midthune|Geoffrey Williams|Amy L. Yaroch|Thomas G. Hurley|Ken Resnicow|James R. Hébert|Deborah J. Toobert|Geoffrey Greene|Karen E. Peterson|Linda Nebeling
Evaluation of a Short Dietary Assessment Instrument for Percentage Energy from Fat in an Intervention Study
National Cancer Institute|National Cancer Institute|University of Rochester|National Cancer Institute|University of South Carolina|University of Michigan–Ann Arbor|University of South Carolina|Oregon Research Institute|University of Rhode Island|Harvard University|National Cancer Institute
need inexpensive measure dietary intake intervention studies led evaluation national cancer institute nci percentage energy fat short instrument pfat subgroup behavioral change consortium bcc intervention sites pfats performance evaluated using multiple nonconsecutive 24h dietary recalls 24hr reference instrument among participants baseline 4 demographically diverse intervention sites bcc mean estimates percentage energy fat 24hr pfat within 21 percentage points 2 sitegender comparisons 24hr pfat estimates significantly different p 005 among men 2 3 sites among women 2 4 sites deattenuated pearson correlation coefficients pfat true intake estimated 24hr using measurement error model significantly different 0 p 005 men women sites ranging 052 077 among men 036 059 among women besides gender site factors examined age education smoking status bmi consistently moderated validity estimates accurate assessment diet baseline presumably followup essential detailed instrument multiple 24hr may warranted question whether pfat adequately measures change diet addressed another article supplement