A culture-sensitive quantitative food frequency questionnaire used in an African population: 2. Relative validation by 7-day weighted records and biomarkers

Public Health Nutrition
U E MacIntyreH H Vorster

Abstract

To determine the relative validity of the culture-sensitive quantitative food frequency questionnaire (QFFQ) developed for the Transition, Health and Urbanisation in South Africa (THUSA) study by 7-day weighed food records, urinary nitrogen excretion and basal metabolic rate (BMR). A cross-sectional study. A community-based study in a population stratified according to level of urbanization. Residents of the North West Province, South Africa. aged between 15 and 65 years. The weighed food record study comprised 74 participants while 104 participants collected 24-hour urine samples. All participants were interviewed using the QFFQ. For the weighed food record study, participants kept detailed weighed food diaries for seven consecutive days. For the urinary nitrogen study, participants made one 24-hour urine collection. Completeness of the urine collections was checked against 240 rug pan-aminobenzoic acid. BMR was estimated by the Schofield equations. Spearman rank correlation coefficients between the QFFQ and weighed food record ranged between 0.14 (fibre) and 0.59 (vitamin C). The QFFQ tended to underestimate intakes compared with the weighed records. Quintile distributions were similar for both methods. The correlation betwee...Continue Reading

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Citations

Dec 27, 2005·American Journal of Human Biology : the Official Journal of the Human Biology Council·P B GrayH H Vorster
Jul 15, 2009·The British Journal of Nutrition·Joy NgoLluís Serra-Majem
Nov 2, 2012·Public Health Nutrition·Maria D JacksonJose Jackson-Malete
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Jan 27, 2010·The British Journal of Nutrition·Lluis Serra-MajemPatricia Henríquez-Sánchez
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Nov 5, 2014·American Journal of Human Biology : the Official Journal of the Human Biology Council·Ayako MoritaMasahiro Umezaki
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