States assume the ultimate responsibility for the collection and dissemination of information on the living conditions of persons with disabilities and promote comprehensive research on all aspects, including obstacles which affect the lives of persons with disabilities. States should, at regular intervals, collect gender-specific statistics and other information concerning the living conditions of persons with disabilities. Such data collection could be conducted in conjunction with national censuses and household surveys and could be undertaken in close collaboration, inter alia, with universities, research institutes and organizations of persons with disabilities. The data collection should include questions on programmes and services and their states should consider establishing a data bank on disability, which would include statistics on available services and programmes as well as on the different groups of persons with disabilities. They should bear in mind the need to protect individual privacy and personal integrity. States should initiate and support programmes of research on social, economic and participation issues that affect the lives of persons with disabilities and their families. Such research should include studies on the causes, types and frequencies of disabilities, the availability and efficacy of existing programmes and the need for development and evaluation of services and support measures. A combination of representatives of private and public organizations is most likely to achieve an intersectoral and multidisciplinary composition. Representatives could be drawn from Concerned government ministries, organizations of persons with disabilities and non-governmental organizations. Organizations of persons with disabilities should have considerable influence in the national coordinating committee in order to ensure proper feedback of their concerns. The national coordinating committee should be provided with sufficient autonomy and resources to fulfil its responsibilities in relation to its decision-making capacities. It should report to the highest governmental level.