3. Assessment of methodological limitations (adapted CASP).

Study	Was there a clear statement of aims?	Was a qualitative methodology appropriate?	Was the research design appropriate?	Was the recruitment strategy appropriate?	Were data collected in a way that addressed the research issue?	Was the relationship between researcher and participants adequately considered?	Were ethical issues taken into consideration?	Was data analysis sufficiently rigorous?	Was there a clear state ment of findings?	How valuable is the research?	Overall assessment of methodological limitations
Danquah 2019	Yes	Yes	Yes	Unclear	Yes	No	Yes	Unclear	Yes	Useful	Qualitative research methods used, but little information on how the analysis was done and very brief statement of data in the paper. Little information on respondents
Ha 2016	Yes	Yes	No	Unclear	No	No	Yes	No	No	Marginal	This study did not use a robust qualitative method. They analysed free‐text responses in a survey. No discussion of respondents' relationship to those providing the survey or methods of analysis.
CASP: Critical Appraisal Skills Programme (CASP 2020)