Variables | Studies (n) | Patients (n) | P value | Incidence: OR/MDs (95% CI) | Heterogeneity: P value (I2) | Model |
---|---|---|---|---|---|---|
Total blood loss (TBL) | 18 | 1656 | < 0.001* | 63.99 (27.81 to 100.16) | < 0.001* (81%) | Random |
 | 13 | 1197 | < 0.001* | 33.38 (19.24 to 47.51) | 0.34 (11%) | Fixed |
Drain output | 17 | 1494 | 0.03* | 28.44 (2.61 to 54.27) | < 0.001* (93%) | Random |
 Clamp < 2 h | 7 | 607 | 0.03* | 51.47 (6.02 to 96.92) | < 0.001* (92%) | Random |
 Clamp ≥ 2 h | 10 | 887 | 0.51 | 12.40 (− 24.85 to 49.65) | < 0.001* (89%) | Random |
Hidden blood loss (HBL) | 6 | 640 | 0.83 | 7.57 (− 60.34 to 75.47) | 0.006 (69%) | Random |
Hemoglobin (Hb) fall | 19 | 1749 | 0.79 | − 0.02 (− 0.20 to 0.16) | < 0.001* (87%) | Random |
 POD1 | 10 | 1052 | 0.07 | − 0.34 (− 0.70 to 0.02) | < 0.001* (91%) | Random |
 | 8 | 839 | 0.86 | − 0.01 (− 0.11 to 0.13) | 0.14 (36%) | Fixed |
 POD2 | 8 | 701 | 0.37 | 0.17 (− 0.20 to 0.53) | <0.001* (82%) | Random |
 | 6 | 531 | 0.36 | − 0.08 (− 0.25 to 0.09) | 0.11 (44%) | Fixed |
 POD3+ | 6 | 637 | 0.001* | 0.24 (0.09 to 0.39) | 0.18 (34%) | Fixed |
Transfusion rate | 25 | 2950 | 0.62 | 0.93 (0.69 to 1.24) | 0.54 (0%) | Fixed |
Complications | 20 | 2594 | 0.98 | 1.00 (0.72 to 1.39) | 0.47 (0%) | Fixed |
 DVT | 10 | 1641 | 0.83 | 0.92 (0.44 to 1.92) | 0.84 (0%) | Fixed |
 PE | 3 | 342 | 0.98 | 1.02 (0.25 to 4.20) | 0.81 (0%) | Fixed |
 Wound complications | 14 | 1465 | 0.83 | 0.95 (0.58 to 1.55) | 0.39 (6%) | Fixed |
 Other adverse events | 13 | 1899 | 0.69 | 1.10 (0.68 to 1.80) | 0.42 (2%) | Fixed |
Length of stay | 7 | 748 | 0.33 | 0.07 (− 0.07 to 0.22) | 0.35 (11%) | Fixed |
Tourniquet time | 9 | 816 | 0.19 | − 1.22 (− 3.06 to 0.62) | 0.74 (0%) | Fixed |