|
|||||
|
|
Reproducibility and relative validity of food group intake in a food frequency questionnaire developed for Nepalese diet |
|
| Authors: | Archana Shrestha Rajendra Prasad Koju Shirley AA Beresford Kwun Chuen Gary Chan Frederik A Connell Biraj Man Karmacharya |
| Institution: | 1. Department of Epidemiology, University of Washington, Seattle, WA, USA;2. Department of Cardiology, Dhulikhel Hospital Kathmandu University Teaching Hospital, Dhulikhel, Nepal;3. Department of Global Health, University of Washington, Seattle, WA, USA;4. Department of Biostatistics, University of Washington, Seattle, WA, USA;5. Department of Health Services, University of Washingonton, Seattle, WA, USA;6. Department of Epidemiology and Global Health, University of Washington, Seattle, WA, USA;7. Department of Community Medicine, Dhulikhel Hospital Kathmandu University Teaching Hospital, Dhulikhel, Nepal;8. Department of Community Programs, Dhulikhel Hospital Kathmandu University Teaching Hospital, Dhulikhel, Nepal |
| Abstract: | We developed a food frequency questionnaire (FFQ) designed to measure the dietary practices of adult Nepalese. The present study examined the validity and reproducibility of the FFQ. To evaluate the reproducibility of the FFQ, 116 subjects completed two 115-item FFQ across a four-month interval. Six 24-h dietary recalls were collected (1 each month) to assess the validity of the FFQ. Seven major food groups and 23 subgroups were clustered from the FFQ based on macronutrient composition. Spearman correlation coefficients evaluating reproducibility for all food groups were greater than 0.5, with the exceptions of oil. The correlations varied from 0.41 (oil) to 0.81 (vegetables). All crude spearman coefficients for validity were greater than 0.5 except for dairy products, pizzas/pastas and sausage/burgers. The FFQ was found to be reliable and valid for ranking the intake of food groups for Nepalese dietary intake. |
| Keywords: | Food frequency questionnaire reproducibility validity Nepali diet Nepal |