There is a lot of research available. As I said, I recently attended a conference where international research was presented by the International Detention Coalition and by the United Nations High Commissioner for Refugees. There were examples from Canada, the U.S., and Australia.
They often involve guidelines for screening vulnerabilities very early on, either at the moment of arrest or as early as possible in the detention process, to see when alternatives are appropriate. The determination of the appropriate alternatives can be done by looking at where people are in the process, which has an impact on their likely compliance with the procedures, and at the available resources. For example, there are shelters, and in Montreal we have a team of social workers that follows claimants very closely.
Some of the research shows that a case management approach that accompanies people through the process increases compliance and increases the chances that people will appear throughout their refugee claim process.