Overweight and obesity prevalence in children based on 6- or 12- month IOTF cut-points: does interval size matter?
Data(s) |
01/04/2006
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Resumo |
The International Obesity Taskforce (IOTF) recommends using age- and gender-specific body mass index (BMI) cut-points for defining the prevalence of overweight and obesity in children. These are given in both 6- and 12-month age intervals. Since the BMI-for-age curves are nonlinear, a degree of bias will be introduced when age intervals are wide. We aimed to quantify this bias in prevalence estimates in 2178 Australian children aged 4-12 years using 12- versus 6-month age intervals. Using the 12-month interval, the prevalence of overweight and obesity was underestimated by 1.4% compared to the 6-month interval estimates; however, this was age-dependent. It overestimated prevalence for 4-year olds, but underestimated it for older ages by up to 2.6%. Overweight prevalence was generally affected more than obesity prevalence. The use of different age intervals for IOTF cut-points introduces a small but systematic bias in prevalence estimates of overweight and obesity. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Nature Publishing Group |
Relação |
http://dro.deakin.edu.au/eserv/DU:30003917/swinburn-overweightand-2006.pdf http://dx.doi.org/10.1038/sj.ijo.0803162 |
Direitos |
2006, Nature Publishing Group |
Palavras-Chave | #BMI #children #IOTF cut-points #overweight |
Tipo |
Journal Article |