Table 1.
Downs and Black16 quality assessment scores for all studies (n = 10).
| Studies and research designs | Reporting (max 10) | External validity (max 3) | Bias (max 7) | Confound (max 6) | Power (max 1) | Total (maximal score = 27) |
|---|---|---|---|---|---|---|
| Conti et al.11 Cross-sectional |
6 | 3 | 1 | 2 | 0 | 12 |
| Bolzan et al.4 Cross-sectional |
8 | 0 | 2 | 3 | 0 | 13 |
| Okuro et al.12 Cross-sectional |
6 | 3 | 2 | 1 | 0 | 12 |
| Silveira et al.3 Cross-sectional |
4 | 1 | 3 | 0 | 0 | 8 |
| Roggia et al.14 Cross-sectional |
4 | 0 | 2 | 1 | 0 | 7 |
| Neiva et al.10 Cross-sectional |
6 | 1 | 2 | 1 | 0 | 10 |
| Yi et al.13 Cross-sectional |
5 | 3 | 0 | 2 | 0 | 10 |
| Corrêa and Berzin7 Non-randomized clinical trial |
6 | 1 | 2 | 0 | 0 | 9 |
| Lima et al.20 Cross-sectional |
2 | 1 | 2 | 2 | 0 | 7 |
| Krakauer and Gulherme21 Cross-sectional |
3 | 2 | 1 | 0 | 0 | 6 |