Table 3 Quality of evidence
Outcomes | Limitations of the study | Inconsistency I2 > 50 per cent | Indirectness Yes: ↓ | inaccuracy | Publication bias Yes or unclear: ↓ | Effect size RR (95% CI) Lower limit RR > 2.0: ↑ | Overall quality of evidence |
|---|---|---|---|---|---|---|---|
Complicated with hypertension | 1 ↓ | I2 = 100% ↓ | No | No | No | RR = 1.26,95 % CI [1.04,1.53] | Low |
Complicated with diabetes mellitus | 1 ↓ | I2 = 96% ↓ | No | No | No | RR = 1.59,95 % CI [1.36,1.86] | Low |
Complicated with COPD | 1 ↓ | I2 = 93% ↓ | No | No | No | RR = 1.12, 95 % CI [1.01,1.43] | Low |
Postoperative deep infection | 1 ↓ | I2 = 53% ↓ | No | No | No | RR = 1.67, 95 % CI [1.33,1.95] | Low |
Postoperative superficial infection | 1 ↓ | I2 = 59% ↓ | No | No | No | RR = 1.36, 95 % CI [1.01,1.84] | Low |
Postoperative blood transfusion rate | 1 ↓ | I2 = 100% ↓ | No | No | No | RR = 1.36, 95 % CI [1.01,1.84] | Low |
Postoperative blood transfusion volume | 1 ↓ | I2 = 82% ↓ | No | No | No | MD = -0.04, 95 % CI [-0.27,0.20] | Low |
DVT | 1 ↓ | I2 = 100% ↓ | No | Yes ↓ | No | RR = 2.23, 95 % CI [0.61, 8.13] ↑ | Low |
Hospital days | 1 ↓ | I2 = 97 per cent ↓ | No | No | No | MD = 1.66, 95 % CI [1.10, 2.21] | Low |
Rehospitalisation rate within three months | 1 ↓ | I2 = 100% ↓ | No | Yes ↓ | No | RR = 2.57, 95 % CI [1.03, 6.42] ↑ | Low |
mortality | 1 ↓ | I2 = 59% ↓ | No | Yes ↓ | No | RR = 4.12, 95 % CI [3.08, 5.51] ↑ | Low |