Table 1 Risk of bias assessment of the included studies.
Title | Category | Score | |||||||
|---|---|---|---|---|---|---|---|---|---|
Selection | Comparability | Exposure | |||||||
1 | 2 | 3 | 4 | 1 | 1 | 2 | 3 | ||
Castellanos et al. 2000 | ☆ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 |
Gould et al. 2001 | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 8 |
Mostofsky et al. 2001 | ★ | ★ | ★ | ★ | ★ | ★ | ☆ | ★ | 7 |
Klein et al. 2003 | ★ | ★ | ☆ | ★ | ★ | ★ | ☆ | ★ | 6 |
Hanisch et al. 2006 | ☆ | ★ | ☆ | ★ | ★ | ★ | ★ | ★ | 6 |
Van Der Stigchel et al. 2007 | ★ | ★ | ★ | ☆ | ★ | ★ | ★ | ★ | 7 |
Rommelse et al. 2008 | ★ | ★ | ★ | ☆ | ★ | ★ | ★ | ★ | 7 |
Loe et al. 2009 | ★ | ★ | ★ | ★ | ★ | ★ | ☆ | ★ | 7 |
Mahone et al. 2009 | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 8 |
Fernandez-Ruiz et al. 2019 | ★ | ★ | ★ | ★ | ★ | ★ | ☆ | ★ | 7 |
Molina et al. 2020 | ★ | ★ | ☆ | ★ | ★ | ★ | ☆ | ★ | 6 |
Huang & Chan, 2020 | ★ | ★ | ★ | ★ | ★ | ★ | ☆ | ★ | 7 |
