For years, I've been asking myself one question over and over again. Why is the overdose death rate five times higher in Ontario than in Quebec? Many factors come into play. However, I believe that one reason stems from the integration of services, as you said. For example, general practitioners in CLSCs have access to more resources, including psychologists.
A cultural difference also comes into play, of course. That said, I believe that the difference lies mainly in the capacity to conduct a good triage and to take a holistic view of the situation. I'm not saying that everything works perfectly in Quebec. However, I believe that this capacity for integration plays a key role in Quebec's success in this area. We can see this approach in the parts of Europe that have also achieved some success.