Avoidable mortality in Québec and its regions.

Avoidable mortality has been proposed as an outcome measure of health services and our aim, in this study, is to trace its general features and regional variations in Québec. For that purpose, comparisons are established between two time periods (1969-73 and 1982-90) and with several countries. Furthermore, regional SMRs (for the period 1982-90) are submitted to the Gail heterogeneity test and introduced in a stepwise regression with variables describing health services, socio-economic context and prevalence or incidence of related diseases. An analysis of proportional mortality is carried out in the two northern regions of Kativik and Baie-James. Avoidable mortality has dropped substantially in Québec, except in the case of asthma, and now displays excellent scores at the international level. Only three causes of death show significant regional variations: tuberculosis, hypertensive and cerebrovascular diseases and perinatal mortality. These variations are mainly associated with socio-economic factors but also with health services. Furthermore, the highest rates of avoidable death have been observed in Gaspésie, Saguenay/Lac St-Jean and in the two northern regions. These results are discussed through information already available on health services in Québec.