Childhood Obesity Surveillance Initiative (COSI) - Data collection procedures (2016)
The WHO Regional Office for Europe has established the Childhood Obesity Surveillance Initiative in more than half the
countries in the Region for routine monitoring of the policy response to the emerging obesity epidemic. The aim of the
system is to measure trends in overweight and obesity in children aged 6.0–9.9 years for accurate understanding of the
epidemic and to allow inter-country comparisons. This document outlines the data collection procedures agreed for use
in the Initiative.