Table 3.
Summary of the results of the individual outcomes
| Outcome variable | No of study | No of patients | Incidence rate (%) | Effect size risk ratio (RR); (95% CI) |
Heterogeneity test | P value |
| Flap survival | 8 | 2349 | ICU=97.19 in Non-ICU=97.89% |
RR, 1.46; CI (0.80 to 2.69) | 0% | 0.231 |
| Partial flap necrosis | 2 | 880 | ICU=1.98 Non-ICU=2.4 |
RR, 1.251; CI 0.321 to 4.876 | 0 | 0.747 |
| Venous congestion | 3 | 1097 | ICU=2.90 Non-ICU=3.39 |
RR, 1.047; CI 0.486 to 2.257 | 0 | 0.906 |
| Arterial thrombosis | 3 | 1097 | ICU=1.01 Non-ICU=1.97 |
RR, 0.804; CI 0.261 to 2.471 | 0 | 0.703 |
| Reoperation | 5 | 1253 | ICU=12.34% Non-ICU=9.44% |
RR, 1.327; CI 0.693 to 2.539 | 53% | 0.394 |
| Readmission | 4 | 861 | ICU=10.91% Non-ICU=8.95% |
0.922; 95% CI 0.611 to 1.392 | 0 | 0.700 |
| Pneumonia | 4 | 1203 | ICU=6.87 Non-ICU=2.45 |
RR, 2.769; CI 1.193 to 6.424 | 0 | 0.018 |
| Respiratory failure | 3 | 1027 | ICU=11.33 Non-ICU=6.09 |
RR, 1.675; CI 0.911 to 3.078 | 35% | 0.097 |
| Need for ventilation | 2 | 365 | ICU=12.5 Non-ICU=10.52 |
RR, 1.926; CI 1.128 to 3.288 | 0 | 0.016 |
| Sepsis | 5 | 1462 | ICU=1.6 Non-ICU=0 |
RR, 4.23; CI 1.12 to 15.91 | 0 | 0.033 |
| Delirium | 2 | 365 | ICU=12.5 Non-ICU=6.02 |
RR, 2.067; CI 0.944 to 44.526 | 0 | 0.069 |
| Mortality | 3 | 1115 | ICU=0.38 Non-ICU=0.32 |
RR, 0.633; CI 0.072 to 5.532 | 0 | 0.679 |
ICU, intensive care unit.