Table 2.
Outcome indicator | No. of sample cases in the included studies | heterogeneity | Model of analysis | Group effect value | Estimated value | 95% Confidence interval | GRADE quality of evidence | ||
---|---|---|---|---|---|---|---|---|---|
I2 | p | Z | p | ||||||
Treatment effect | 1659 | 90% | <0.01 | Random effect model | 4.65 | <0.01 | 0.84(SMD) | -1.19,-0.48 | Moderate |
Side effect | 1353 | 38% | 0.06 | Fixed effect model | 4.62 | <0.01 | 1.96(RR) | 1.47,2.61 | Moderate |
Drop-out rate | 882 | 0% | 0.82 | Fixed effect model | 0.89 | 0.37 | 1.27(RR) | 0.75,2.12 | Moderate |
SMD: standardized mean difference; RR: relative risk;
GRADE: The Grading of Recommendations Assessment, Development and Evaluation