TY - JOUR
T1 - Relative validity of food frequency questionnaire nutrient estimates in the black women's health study
AU - Kumanyika, Shiriki K.
AU - Mauger, David
AU - Mitchell, Diane C.
AU - Phillips, Brenda
AU - Smiciklas-Wright, Helen
AU - Palmer, Julie R.
N1 - Funding Information:
This research was supported by grants R03 CA70608 and R01 CA 58420, from the National Institute of Health. The authors gratefully acknowledge the assistance of Kristin Tomey, Kristie J. Lancaster and interviewers at the Pennsylvania State University Dietary Assessment Center for their assistance with data management and data collection.
PY - 2003/2
Y1 - 2003/2
N2 - PURPOSE: The Black Women's Health Study (BWHS) was designed to investigate determinants of health and disease in US black women. More than 64,000 women are enrolled in the BWHS cohort. This study assessed the relative validity of the 68-item food frequency questionnaire (FFQ) used in the BWHS baseline questionnaire. METHODS: Four hundred and eight BWHS enrollees were asked to provide three telephone, 24-hour recalls and one written 3-day food diary over a one-year period. Means and Pearson correlations were computed to compare estimates for energy, total fat, saturated fat, protein, carbohydrate, dietary fiber, calcium, iron, vitamin C, folate, β-carotene, and vitamin E from the FFQ, recalls, and diaries. RESULTS: Mean energy intake (kcal) was higher for the diary (1716) than the FFQ (1601) or recalls (1510). Other nutrient estimates (% kcal or per 1000 kcal) were similar across methods, except β-carotene (FFQ higher). Correlations (energy-adjusted, except for energy, and corrected for intraperson variation) between the FFQ and the recalls were higher than for the diary data and were between 0.5 and 0.8, except for energy and vitamin E (both <0.3). CONCLUSION: The BWHS FFQ will support meaningful analyses of diet-health associations for 10 of the 11 energy-adjusted nutrient intake variables analyzed.
AB - PURPOSE: The Black Women's Health Study (BWHS) was designed to investigate determinants of health and disease in US black women. More than 64,000 women are enrolled in the BWHS cohort. This study assessed the relative validity of the 68-item food frequency questionnaire (FFQ) used in the BWHS baseline questionnaire. METHODS: Four hundred and eight BWHS enrollees were asked to provide three telephone, 24-hour recalls and one written 3-day food diary over a one-year period. Means and Pearson correlations were computed to compare estimates for energy, total fat, saturated fat, protein, carbohydrate, dietary fiber, calcium, iron, vitamin C, folate, β-carotene, and vitamin E from the FFQ, recalls, and diaries. RESULTS: Mean energy intake (kcal) was higher for the diary (1716) than the FFQ (1601) or recalls (1510). Other nutrient estimates (% kcal or per 1000 kcal) were similar across methods, except β-carotene (FFQ higher). Correlations (energy-adjusted, except for energy, and corrected for intraperson variation) between the FFQ and the recalls were higher than for the diary data and were between 0.5 and 0.8, except for energy and vitamin E (both <0.3). CONCLUSION: The BWHS FFQ will support meaningful analyses of diet-health associations for 10 of the 11 energy-adjusted nutrient intake variables analyzed.
UR - http://www.scopus.com/inward/record.url?scp=0037305693&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037305693&partnerID=8YFLogxK
U2 - 10.1016/S1047-2797(02)00253-3
DO - 10.1016/S1047-2797(02)00253-3
M3 - Article
C2 - 12559670
AN - SCOPUS:0037305693
SN - 1047-2797
VL - 13
SP - 111
EP - 118
JO - Annals of Epidemiology
JF - Annals of Epidemiology
IS - 2
ER -