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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. 20072 2 2 2 8
Dietrich et al. 20152 2 2 2 8
Jansson & Laystedt. 20024 1 2 2 9
Klein et al. 20043 1 1 1 6
Krall et al. 19973 0 1 2 6
Krall et al. 20063 1 2 2 8
Okamoto et al. 20061 1 2 2 6
  1. Scores ranged from 0 to 11 stars. Studies with 9–11 stars were arbitrarily rated as low risk of bias, 6–8 stars moderate risk of bias and < 6 high risk of bias