Measuring Child Functioning: The UNICEF/Washington Group module

The Washington Group on Disability Statistics (WG) is a United Nations (UN) sponsored City Group commissioned in 2001 to improve the quality and international comparability of disability measures. The main purpose of the WG is the promotion and coordination of international co-operation in the area of health statistics focusing on disability measures suitable for censuses and national surveys. The major objective is to provide basic necessary information on disability which is comparable throughout the world.  

The WG approach to disability measurement identifies six basic, universal activity or functioning domains (seeing, hearing, walking, remembering and concentrating, communicating and self-care) where respondents may experience difficulty functioning in their environments.