Past trends of obesity attributable mortality in The Netherlands; An application of age-period – Cohort analysis

Abstract

The aim of the current study was to develop a simple, valid and low cost model that estimates total body fat percentage (%TBF) based on measures obtained only with a measuring tape. Materials and methods: The study population was 642 healthy adults (408 women and 234 men) with mean age 41.3 years (18 to 75 years) and mean body mass index (BMI) 25.86 kg/m 2. A full set of anthropometric data including weight, height, perimeters and skinfolds were obtained. The volunteers were randomized into a developing (n ¼ 426) and a validation group (n ¼ 214). Dual energy x-ray absorptiometry was used as a reference method. The model was formed with linear regression and its validity and reliability were determined by Bland Altman and Intraclass Correlation Coefficient tests. Results: The developed model is %BF¼-0,615 e 10,498 x Gender + 0,321 x waist circumference(cm) + 0,502 x hip circumference(cm) e 0,390 x forearm circumference(cm) e 19,678 x height(m) (r¼0,923, p< 0.001). The model had no significant bias (-0,052%), limits of agreement ± 8,1% and high Іntra Class Correlation Coefficient (0,955).