Summary of quality assessment of included studies (n=79)
| Yes, n (%) | Partially, n (%) | No, n (%) | Unclear, n (%) | |
| Was the research problem and/or research question clearly reported/defined? | 35 (44) | 16 (20) | 28 (35) | |
| Was there a clear statement of the aims and/or objectives of the research? | 69 (87) | 7 (9) | 3 (4) | |
| Was a qualitative methodology appropriate? | 63 (80) | 16 (20) | ||
| Was the research design appropriate to address the aims of the research? | 66 (84) | 8 (10) | 2 (3) | 3 (4) |
| Was the sampling and recruitment strategy clearly defined and justified? | 44 (56) | 24 (30) | 9 (11) | 2 (3) |
| Was the method of data collection well described? | 57 (72) | 18 (23) | 4 (5) | |
| Were any techniques to enhance trustworthiness used? | 38 (48) | 12 (15) | 15 (19) | 14 (18) |
| Has the relationship between researchers and participants been adequately considered? | 10 (13) | 16 (20) | 51 (65) | 2 (3) |
| Have ethical issues been taken into consideration? | 24 (30) | 39 (49) | 6 (8) | 10 (13) |
| Was the data analysis/interpretation process well described and justified? | 43 (54) | 22 (28) | 14 (18) | |
| Was there a clear statement of findings? | 69 (87) | 10 (13) | ||
| Are the analysis and findings credible? | 55 (70) | 22 (28) | 1 (1) | 1 (1) |
| Was any conflict of interest reported? | 4 (5) | 75 (95) |