Table 1 Subgroup Analysis for Different Variables
Variables | Studies | p value | Incidence | ||
|---|---|---|---|---|---|
SMD(95%CI) OR RR(95%CI) | Heterogeniety (I^2, p) | Model | |||
Need for transfusion | Â | Â | Â | Â | Â |
All | 8 | 0.040 | 0.547 (0.308,0.972) | 77.0%, 0.000 | random |
RCT | 2 | 0.981 | 0.983 (0.245,3.950) | 89.0%, 0.003 | random |
CS | 6 | 0.007 | 0.440 (0.242,0.799) | 67.2%, 0.009 | random |
Intraoperative blood loss | Â | Â | Â | Â | Â |
All | 12 | 0.000 | -1.233 (-1.786,-0.681) | 91.8%, 0.000 | random |
RCT | 6 | 0.003 | -1.800 (-3.001,-0.599) | 95.0%, 0.000 | random |
CS | 6 | 0.000 | -0.775 (-1.211,-0.339) | 79.7%, 0.000 | random |
Total blood loss | Â | Â | Â | Â | Â |
All | 6 | 0.000 | -0.825 (-1.222,-0.428) | 87.6%, 0.000 | random |
RCT | 1 | 0.030 | -0.488 (-0.929,-0.047) | \ | \ |
CS | 5 | 0.000 | -0.901 (-1.393,-0.409) | 84.6%, 0.000 | random |