Table 2 EPHPP Quality assessment for nonrandomised studies included in review
Quality rating for included studies (strong, moderate, weak) | |||
|---|---|---|---|
EPHPP Risk of Bias Criteria | Curtis et al. [22] | Flores et al. [21] | Norrbrink Budh et al. [6] |
Selection bias | Moderate | Weak | Moderate |
Study design | Moderate | Weak | Moderate |
Confounders | Weak | Weak | Weak |
Blinding | Weak | Weak | Weak |
Data collection methods | Strong | Weak | Moderate |
Withdrawals and drop-outs | Weak | Not applicable | Not applicable |
Global Rating | Weak | Weak | Weak |