Author(s)	1. Aims Was there a clear statement of the aims of the research?	2. Appropriateness Is a qualitative methodology appropriate?	3. Research design Was the research design appropriate to address the aims of the research?	4. Sampling Was the recruitment strategy appropriate to the aims of the research?	5. Data collection Were the data collected in a way that addressed the research issue?	6. Researcher role Has the relationship between researcher and participants been adequately considered?	7. Ethics Have ethical issues been taken into consideration?	8. Data analysis Was the data analysis sufficiently rigorous?	9. Findings Is there a clear statement of findings?	10. Value How valuable is the research?	Overall assessment
Loizaga-Velder and Verres (2014) [90]	High	High	High	High	Medium	Low	Low	Medium	High	High	Medium/high
Gasser et al. (2015) [85]	Medium	High	High	High	High	Low	Low	Medium	Medium	High	Medium/high
Lafrance et al. (2017) [87]	High	High	High	High	High	Medium	High	High	High	High	High
Schenberg et al. (2017) [78]	Low	Low	Low	Medium	Medium	Low	High	Medium	Medium	Medium	Low
Schenberg et al. (2017) [79]	High	High	High	Medium	High	High	High	Medium	Medium	High	Medium/high
Belser et al. (2017) [82]	High	High	High	High	High	Medium	High	High	High	High	High
Swift et al. (2017) [81]	High	High	High	High	High	Low	High	Medium	High	High	High
Talin and Sanabria (2017) [89]	Medium	High	High	Low	Medium	Medium	Low	Low	Low	Medium	Medium
Watts et al. (2017) [53]	Medium	High	High	High	High	High	High	Medium	High	High	High
Camlin et al. (2018) [86]	Medium	High	Medium	Low	High	Medium	High	Medium	Medium	High	Medium
Nielson et al. (2018) [77]	High	High	High	High	High	High	High	High	High	High	High
Noorani et al. (2018) [83]	High	High	High	High	High	High	High	High	High	High	High
Renelli et al. (2018) [88]	High	High	High	High	High	Medium	Medium	Medium	High	High	High
van Schalkwyk et al. (2018) [84]	High	High	High	High	High	High	Medium	High	High	High	High
Barone et al. (2019) [80]	Medium	Medium	Medium	High	High	High	High	Medium	High	High	Medium/high