CircHOB is an international collaborative health information system, involved in systematic, standardized, and consistent data collection and analysis. It is population-based, and produces data for all northern regions in all circumpolar countries CircHOB’s purpose is to monitor trends and patterns in health status, health determinants, and health care, provides quantitative evidence for planning and evaluation of health programs and services. It is on-going and sustainable with periodic updates Main gaps: Data on health-related behaviours, attitudes, and practices currently available from health surveys done in various circumpolar countries and regions are not directly comparable, due to differences in the construction of variables, sampling techniques, and contextual meanings of underlying concepts. Substantial international comparative research is needed before such data can be presented. Network type: CircHOB is a flagship project of the Arctic Human Health Expert Group of the Sustainable Development Working Group of the Arctic Council, formed in 2009. CircHOB is a program within the Institute for Circumpolar Health Research Data Center [www.ichr.ca] CircHOB extracts relevant data from existing data sources managed by different groups and agencies in different countries, including: • National population registries, censuses and intercensal estimates • Vital statistics • Mortality/morbidity/health care utilization databases • National/regional health surveys • Statistical reports CircHOB does NOT involve access to individual-level health records nor do any such records cross national borders. It involves the preparation of tables of aggregate data only. Most data are available from websites of national statistical agencies, health ministries, etc. Many but not all sites are available in English and language proficiency in all circumpolar languages [eg. Russian, Finnish, Icelandic] is essential. Some data require special tabulations produced by host agencies