Author:
Dratva Julia,Bertelsen Randi,Janson Christer,Johannessen Ane,Benediktsdóttir Bryndis,Bråbäck Lennart,Dharmage Shyamali C,Forsberg Bertil,Gislason Thorarinn,Jarvis Debbie,Jogi Rain,Lindberg Eva,Norback Dan,Omenaas Ernst,Skorge Trude D,Sigsgaard Torben,Toren Kjell,Waatevik Marie,Wieslander Gundula,Schlünssen Vivi,Svanes Cecilie,Real Francisco Gomez
Abstract
AbstractObjectiveThe aim of the present study was to validate figural drawing scales depicting extremely lean to extremely obese subjects to obtain proxies for BMI and waist circumference in postal surveys.DesignReported figural scales and anthropometric data from a large population-based postal survey were validated with measured anthropometric data from the same individuals by means of receiver-operating characteristic curves and a BMI prediction model.SettingAdult participants in a Scandinavian cohort study first recruited in 1990 and followed up twice since.SubjectsIndividuals aged 38–66 years with complete data for BMI (n 1580) and waist circumference (n 1017).ResultsMedian BMI and waist circumference increased exponentially with increasing figural scales. Receiver-operating characteristic curve analyses showed a high predictive ability to identify individuals with BMI > 25·0 kg/m2 in both sexes. The optimal figural scales for identifying overweight or obese individuals with a correct detection rate were 4 and 5 in women, and 5 and 6 in men, respectively. The prediction model explained 74 % of the variance among women and 62 % among men. Predicted BMI differed only marginally from objectively measured BMI.ConclusionsFigural drawing scales explained a large part of the anthropometric variance in this population and showed a high predictive ability for identifying overweight/obese subjects. These figural scales can be used with confidence as proxies of BMI and waist circumference in settings where objective measures are not feasible.
Publisher
Cambridge University Press (CUP)
Subject
Public Health, Environmental and Occupational Health,Nutrition and Dietetics,Medicine (miscellaneous)
Cited by
22 articles.
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