Design and validation of a food frequency questionnaire to assess the dietary intake for adults in pastoral settings in Northern Tanzania

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dc.creatorKhamis, Ahmed Gharib
dc.creatorMwanri, Akwilina Wendelin
dc.creatorNtwenya, Julius Edward
dc.creatorSenkoro, Mbazi
dc.creatorKreppel, Katharina
dc.creatorBonfoh, Bassirou
dc.creatorMfinanga, Sayoki Godfrey
dc.creatorKwesigabo, Gideon
dc.date.accessioned2023-01-10T09:04:42Z
dc.date.accessioned2025-08-05T07:43:56Z
dc.date.available2023-01-10T09:04:42Z
dc.date.created2023-01-10T09:04:42Z
dc.date.issued2021
dc.description.abstractObjective: Food frequency questionnaires are widely used as a dietary assessment tool in nutritional epidemiol- ogy to determine the relationship between diet and diseases. In Tanzania, there are several cultural variations in food intake which makes it necessary to design and validate a culture-specific food frequency questionnaire (CFFQ). There- fore, we designed a 27-items CFFQ and examine its validity in pastoral communities. Validity of CFFQ was assessed by comparing nutrient intake estimated from the CFFQ against the average from two 24-h diet recall (2R24). Spearman’s correlation coefficients, cross classification and Bland–Altman’s methods were used to assess the validity of CFFQ. Results: A total of 130 adults aged 18 years and above completed both CFFQ and 2R24. Correlation coefficients between CFFQ and 2R24 ranged from low (r = − 0.07) to moderate (r = 0.37). The correlation coefficients were mod- erately significant for kilocalories (r = 0.31, p < 0.001), carbohydrate (r = 0.33, p < 0.001), magnesium (r = 0.37, p < 0.001), and iron (r = 0.34, p < 0.001). On average, about 69% of participants were correctly classified into the same or adjacent quartile of energy and nutrient intake, while 9% were misclassified by the CFFQ. Bland–Altman’s plot demonstrated that the CFFQ had acceptable agreement with the 2R24.
dc.identifierhttp://www.suaire.sua.ac.tz/handle/123456789/4885
dc.identifier.urihttp://repository.costech.or.tz/handle/20.500.14732/99847
dc.languageen
dc.publisherBMC Research Notes
dc.subjectRelative validity
dc.subjectFood frequency questionnaire
dc.subjectDiet recall
dc.subjectPastoralists
dc.titleDesign and validation of a food frequency questionnaire to assess the dietary intake for adults in pastoral settings in Northern Tanzania
dc.typeArticle

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