title: Reproducibility and relative validity of food group intake in a food frequency questionnaire developed for Nepalese diet.
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.
authors.affiliation: a Department of Epidemiology , University of Washington , Seattle , WA , USA.
authors.forename: Archana
authors.initials: A
authors.lastname: Shrestha
authors.affiliation: b Department of Cardiology , Dhulikhel Hospital Kathmandu University Teaching Hospital , Dhulikhel , Nepal.|c Department of Global Health , University of Washington , Seattle , WA , USA.
authors.forename: Rajendra Prasad
authors.initials: RP
authors.lastname: Koju
authors.affiliation: a Department of Epidemiology , University of Washington , Seattle , WA , USA.
authors.forename: Shirley A A
authors.initials: SAA
authors.lastname: Beresford
authors.affiliation: d Department of Biostatistics , University of Washington , Seattle , WA , USA.
authors.forename: Kwun Chuen Gary
authors.initials: KCG
authors.lastname: Chan
authors.affiliation: e Department of Health Services , University of Washingonton , Seattle , WA , USA.
authors.forename: Frederik A
authors.initials: FA
authors.lastname: Connell
authors.affiliation: f Department of Epidemiology and Global Health , University of Washington , Seattle , WA , USA.|g Department of Community Medicine , Dhulikhel Hospital Kathmandu University Teaching Hospital , Dhulikhel , Nepal.|h Department of Community Programs , Dhulikhel Hospital Kathmandu University Teaching Hospital , Dhulikhel , Nepal.
authors.forename: Biraj Man
authors.initials: BM
authors.lastname: Karmacharya
authors.affiliation: h Department of Community Programs , Dhulikhel Hospital Kathmandu University Teaching Hospital , Dhulikhel , Nepal.
authors.forename: Pramita
authors.initials: P
authors.lastname: Shrestha
authors.affiliation: i Department of Family Medicine, Epidemiology, and Global Health , University of Washington , Seattle , WA , USA.
authors.forename: Annette L
authors.initials: AL
authors.lastname: Fitzpatrick
mesh_terms: D000328:Adult; D003625:Data Collection; D004034:Diet Surveys / Q000379:methods*; D005260:Female; D005502:Food / Q000145:classification*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009390:Nepal; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
keywords: Food frequency questionnaire; Nepal; Nepali diet; reproducibility; validity