Table 5 Quality assessment for quasi-experimental studies included in this review
Study | Domain | Overall risk of bias | ||||||
|---|---|---|---|---|---|---|---|---|
1. confounding | 2. selection of participants into the study | 3. classification of intervention | 4. deviations of intended interventions | 5. missing data | 6. measurement of outcomes | 7.selection of the reported results | ||
Chiang 2009 | Moderate risk | Moderate Risk | Low risk | Low risk | Low risk | Low risk | Low risk | Moderate Risk |
Elder 2000 | Moderate risk | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk | Moderate risk |
Fang 2007 | Moderate risk | Low risk | Low risk | Low Risk | Low risk | Moderate Risk | Low risk | Moderate Risk |
Kagawa-Singer, 2009 | Moderate risk | NI | Low risk | NI | Low risk | Serious risk | Low risk | Serious risk |
Wang X 2010 | Moderate risk | Moderate risk | Low risk | Low risk | Low risk | Moderate risk | Low risk | Moderate risk |