Table 1. Critical Appraisal Skill Program (CASP Quality appraisal criteria).

1. Was there a clear statement of the aims of the research? 2. Is a qualitative methodology appropriate?3. Was the research design appropriate to address the aims of the research?4. Was the recruitment strategy appropriate to the aims of the research?5. Were the data collected in a way that addressed the research issue?6. Has the relationship between researcher and survivors been adequately considered?7. Have ethical issues been taken into consideration?8. Was the data analysis sufficiently rigorous?9. Is there a clear statement of findings?10. How valuable is the research?

The first two questions are screening questions. If the answer to both is “yes”, it is worth proceeding with the remaining questions. Record a “yes”, “no” or “cannot tell” to most of the questions.