Open AccessEvaluation of Three Nutritional Assessment Methods in a Group of Women
Author(s) -
Tiepu Liu,
Nedra P. Wilson,
Carol B. Craig,
Tsunenobu Tamura,
Seng-Jaw Soong,
Howerde E. Sauberlich,
Philip Cole,
Charles E. Butterworth
Publication year - 1992
Publication title -
epidemiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.901
H-Index - 173
eISSN - 1531-5487
pISSN - 1044-3983
DOI - 10.1097/00001648-199211000-00006
Subject(s) - intraclass correlation , nutrient , medicine , zoology , beta carotene , vitamin , food group , reproducibility , mathematics , biology , environmental health , statistics , ecology
We conducted a reproducibility study of four 24-hour dietary recalls (N = 224) and four biochemical assessments of nutritional status (N = 265) in a group of women in Alabama. For 24-hour recalls, the variance component ratios were all greater than 1, and the intraclass correlation coefficients ranged from 0.16 to 0.27 for macronutrients, and from 0.09 to 0.37 for vitamins and minerals. The intraclass correlation coefficients for biochemical assessments ranged between 0.39 and 0.74 with corresponding variance component ratios of 1 or below for most nutrients. The correlation coefficients between the food frequency questionnaire on the usual dietary intake during the year preceding the beginning of study and the mean values of four 24-hour dietary recalls administered at the initial visit and again after 2, 4, and 6 months ranged from 0.3 to 0.4 for most nutrients. We found plasma beta-carotene levels to be moderately correlated with dietary vitamin A (r = 0.20) and beta-carotene (r = 0.22).