학술논문
Assessing fruit and vegetable consumption in a 5 A Day study targeting rural blacks: the issue of portion size
Document Type
Academic Journal
Author
Source
Journal of the American Dietetic Association. October 1996, Vol. 96 Issue 10, p1040, 3 p.
Subject
Language
English
ISSN
0002-8223
Abstract
Food frequency questionnaires (FFQs) are used to collect dietary data in various study settings. Controversy exists regarding the relative contribution of portion information to FFQ sensitivity, validity, and reliability (1-8). [...]