Estimating child BMI growth curves for Canada

Growth curves are used by health professionals to determine whether the growth of a child or a foetus, for example, is within normal limits. The growth charts currently used in Canada for height, weight and body mass index (BMI) are based on US data. Child growth curves can now be generated from the latest available data in Canada. One way of estimating and drawing growth curves is the Lambda-Mu-Sigma (LMS) method. The method has been used in various studies by the World Health Organization, the United Kingdom and the United States to generate reference growth curves for children. In this article, the LMS method is used to estimate growth curves in BMI percentiles from weighted cross-sectional data provided by cycle 2.2 of the Canadian Community Health Survey. This article is about the child BMI, one of the anthropometric measures most commonly used to assess growth and obesity.