Reporting quality of included studies
| Study type; study | Adequately reported items, no. * | Adequately reported items, % |
|---|---|---|
| Randomized controlled trials | ||
| Beaulieu et al. 2006 (34) | 24/35 | 65.6 |
| Blake et al. 2006 (13) | 15/34 | 44.1 |
| Frank et al. 2008 (35) | 27/34 | 79.4 |
| Kantor and Hopper 1981 (50)† | 2/33 | 6.0 |
| Levin et al. 2017 (24) | 31/35 | 88.6 |
| Nonrandomized studies | ||
| Cohort study | ||
| Holdcroft et al. 2006 (29) | 14/33 | 42.4 |
| Case series and case reports | ||
| Aggarwal et al. 2009 (30) | 13/26 | 50.0 |
| Barbosa-Hernandez et al. 2013 (31)† | 10/26 | 38.5 |
| Gofeld et al. 2005 (36) | 14/26 | 53.8 |
| Haroutiunian et al. 2011 (52)† | 8/26 | 30.8 |
| Haroutiunian et al. 2008 (31) | 11/26 | 42.3 |
| Haroutiunian et al. 2016 (37) | 19/26 | 73.0 |
| Hornby et al. 2009 (38) | 17/26 | 65.4 |
| Ware et al. 2002 (39) | 18/26 | 69.2 |
| Surveys | ||
| Harris et al. 2000 (53) | 6/10 | 60.0 |
| Hazekamp et al. 2013 (25) | 8/10 | 80.0 |
| Piper et al. 2017 (54) | 6/10 | 60.0 |
| Ste-Marie et al. 2016 (26) | 10/10 | 100 |
| Swift et al. 2005 (27) | 8/10 | 80.0 |
| Walsh et al. 2013 (28) | 8/10 | 80.0 |
| Qualitative study | ||
| Peters 2013 (55) | 11/21 | 52.4 |
| Systematic reviews | ||
| Campbell et al. 2001 (45) | 18/25 | 72.0 |
| Covarrubias-Gomez 2008 (48)† | 5/25 | 20.0 |
| Deshpande et al. 2015 (41) | 17/25 | 68.0 |
| Fitzcharles et al. 2016 (42) | 18/25 | 72.0 |
| Hwang et al. 2016 (32) | 11/25 | 44.0 |
| Khaiser et al. 2016 (33) | 12/25 | 48.0 |
| Kung et al. 2011 (49)† | 6/27 | 22.2 |
| Lynch and Ware 2015 (46) | 16/25 | 64.0 |
| MacFarlane et al. 2011 (47) | 16/25 | 64.0 |
| Martín-Sánchez et al. 2009 (43) | 21/27 | 77.8 |
| Stevens and Higgins 2017 (44) | 20/26 | 76.9 |
| Wang et al. 2008 (40) | 17/25 | 68.0 |