Table 2.
Results of pooled OR with 95%CI and Begg’s test for preoperative possible risk factors
| Preoperative possible risk factors | Number of articles | I 2 | P value for heterogeneity | Pooled OR(95%CI) | P for pooled results | P for Begg’s test |
|---|---|---|---|---|---|---|
| Ischemic events | 5 | 74.4% | 0.001* | 1.40 (1.02–1.92) | 0.039* | 0.230 |
| PCA involvement | 5 | 83.4% | 0.000* | 2.64 (1.17–5.95) | 0.019* | 0.806 |
| Suzuki stage | 4 | 32.8% | 0.215 | 1.20 (0.97, 1.49) | 0.101 | 0.734 |
| Surgery type (DB as reference) | 4 | 0.0% | 0.601 | 1.12 (1.03, 1.33) | 0.017* | 0.806 |
| Age | 5 | 38.2% | 0.167 | 1.02 (1.00, 1.04) | 0.090 | 0.806 |
| Mae sex | 4 | 0.0% | 0.595 | 1.16 (0.75–1.82) | 0.504 | 1.000 |
| Diabetes | 3 | 5.9% | 0.345 | 4.02 (1.59, 10.16) | 0.003* | 0.296 |
| Hypertension | 2 | 0.0% | 0.494 | 0.70 (0.31, 1.58) | 0.392 | – |
DB direct bypass
*p < 0.05