The prevalence of obesity in children is rapidly rising, leading to many serious consequences worldwide. In 2005, the World Health Organisation (WHO) Regional Office for Europe issued recommendations and guidelines for regular collection of data on weight, height, and waist and hip circumference in children worldwide in order to monitor prevalence trends of growth, overweight and obesity. The Department of Health and the Health Service Executive commissioned the National Nutrition Surveillance Centre, based at the School of Public Health, Physiotherapy and Population Science in University College Dublin, to carry out this surveillance work in the Republic of Ireland.
This report presents the findings from three waves of the WHO Childhood Obesity Surveillance Initiative survey in the Republic of Ireland in 2008, 2010 and 2012. In 2008, 163 randomly selected primary schools participated in this project and in the first round the protocol as set out by the WHO for participating countries was followed. The target age was children aged exactly 7 years. In the subsequent two waves, the same WHO protocol was followed and the same schools were contacted again and this time, as well as 7-year-olds, 9-year-olds were also selected for participation in the second round. In the third round, 7-year, 9-year, as well as 11-year-olds were included.
This means that there are three cross-sectional surveys of 7-year-old children, two cross-sectional surveys of 9-year-olds and one cross-sectional comparison group of 7-, 9- and 11-year-old children. Using a unique identifier there are also two cohort groups of the same children followed on two separate occasions from ages 7 to 9 and ages 9 to 11, respectively. In this report, we also compare the data on 9-year-old children to the findings from the Growing Up in Ireland Cohort study.