Subgroup title | No of trials | No of participants | Risk ratio (95% CI) | P Value | I2 (%) |
---|---|---|---|---|---|
Overall | 6 | 8216 | 1.20 (0.79–1.82) | 0.40 | 0 |
Daily dose | Â | Â | Â | Â | Â |
 Low dose | 2 | 1949 | 1.20 (0.66–2.20) | 0.53 | 22.3 |
 Medium dose | 2 | 4170 | 1.19 (0.72–1.95) | 0.50 | 28.3 |
 High dose | 2 | 2097 | 1.38 (0.80–2.40) | 0.25 | 0 |
Duration | Â | Â | Â | Â | Â |
 Less than 24 weeks | 1 | 1620 | 1.01(0.29–3.48) | 0.99 |  |
 At least 24 weeks | 5 | 6596 | 1.22 (0.78–1.91) | 0.37 | 30.3 |