Table 4 Methodological quality of the longitudinal studies
From: Effect of smoking cessation on tooth loss: a systematic review with meta-analysis
Selection (maximum 4) | Comparability (maximum 2) | Outcome (maximum 3) | Statistics (maximum 2) | Total (maximum 11) | |
Dietrich et al. 2007 | 2 ★ | 2 ★ | 2 ★ | 2 ★ | 8★ |
Dietrich et al. 2015 | 2 ★ | 2 ★ | 2 ★ | 2 ★ | 8 ★ |
Jansson & Laystedt. 2002 | 4 ★ | 1 ★ | 2 ★ | 2 ★ | 9 ★ |
Klein et al. 2004 | 3 ★ | 1 ★ | 1 ★ | 1 ★ | 6 ★ |
Krall et al. 1997 | 3 ★ | 0 ★ | 1 ★ | 2 ★ | 6 ★ |
Krall et al. 2006 | 3 ★ | 1 ★ | 2 ★ | 2 ★ | 8 ★ |
Okamoto et al. 2006 | 1 ★ | 1 ★ | 2 ★ | 2 ★ | 6 ★ |