title: [Determination of optimal time frame for the body mass index surveys for the study of nutrition quality of a population].
abstract: The results of questionnaires and body-weight technique (applicable to nutrition assessment) (14 days in 40 families) of the Chuvash Republic were evaluated. The questionnaires' data were analyzed for 3, 7, 10 and 14-day periods and separately for weekends. A statistical analysis showed a lack of reliable quantitative differences both in respect to calculating all nutrients and in respect to the food value of daily rations during different time periods; however, reliable differences were detected between families' nutrition in weekends and working days. It was recommended to conduct such studies at least for as long as 7 days in order to ensure a complete hygienic evaluation of a balanced daily ration and to take account of all consumed foodstuffs.
authors.forename: E A
authors.initials: EA
authors.lastname: Khokhlova
authors.forename: N V
authors.initials: NV
authors.lastname: Krasnova
authors.forename: E G
authors.initials: EG
authors.lastname: Rodionova
mesh_terms: D015992:Body Mass Index; D004032:Diet; D002149:Energy Intake / Q000502:physiology*; D006304:Health Status; D006305:Health Status Indicators; D006801:Humans; D018977:Micronutrients / Q000378:metabolism; D009752:Nutritional Status; D011795:Surveys and Questionnaires; D013997:Time Factors
chemical_list: D018977:Micronutrients