Table 2.
Effects of intervention and sensitivity analysis.
| Outcomes | Original analysis | Sensitivity analysis | ||||
|---|---|---|---|---|---|---|
| k (n) | Participant | RR (95% CI; p-value) | k (n) | Participant | RR (95% CI; p-value) | |
| Overall | ||||||
| Endometritis | 6 (8) | 1707 | 1.00 (0.80, 1.24; p = 0.970)* | 4 (6) | 1329 | 0.98 (0.77, 1.23; p = 0.840)* |
| Febrile morbidity | 3 (4) | 744 | 0.85 (0.43, 1.71; p = 0.650)* | 2 (3) | 594 | 0.98 (0.46, 2.06; p = 0.950)* |
| Incisional SSI | 4 (7) | 836 | 0.49 (0.30, 0.78; p = 0.003)† | 3 (4) | 686 | 0.44 (0.23, 0.86; p = 0.020)* |
| Subgroup analysis | ||||||
| By placental delivery method | ||||||
| Endometritis | ||||||
| Not specified | 3 (3) | 728 | 0.80 (0.36, 1.81; p = 0.600)* | 2 (2) | 578 | 0.80 (0.36, 1.81; p = 0.600)* |
| Manual | 3 (3) | 604 | 1.07 (0.82, 1.41; p = 0.610)* | 2 (2) | 376 | 1.06 (0.78, 1.45; p = 0.720)* |
| Spontaneous | 2 (2) | 375 | 0.90 (0.60, 1.33; p = 0.590)* | 2 (2) | 375 | 0.90 (0.60, 1.33; p = 0.590)* |
| Febrile morbidity | ||||||
| Not specified | 2 (2) | 636 | 0.46 (0.21, 1.00; p = 0.050)* | 1 (1) | 486 | 0.49 (0.21, 1.19; p = 0.120) |
| Manual | 1 (1) | 53 | 1.28 (0.52, 3.19; p = 0.590) | 1 (1) | 53 | 1.28 (0.52, 3.19; p = 0.590) |
| Spontaneous | 1 (1) | 55 | 1.69 (0.56, 5.11; p = 0.360) | 1 (1) | 55 | 1.69 (0.56, 5.11; p = 0.360) |
| Incisional SSI | ||||||
| Not specified | 3 (5) | 728 | 0.47 (0.29, 0.76; p = 0.002)† | 2 (2) | 578 | 0.42 (0.25, 0.73; p = 0.002)* |
| Manual | 1 (1) | 53 | Not estimable | 1 (1) | 53 | Not estimable |
| Spontaneous | 1 (1) | 55 | 2.90 (0.12, 68.15; p = 0.510) | 1 (1) | 55 | 2.90 (0.12, 68.15; p = 0.510) |
| By timing of glove change | ||||||
| Endometritis | ||||||
| After delivery of fetus | 4 (4) | 1079 | 1.01 (0.81, 1.27; p = 0.920)* | 2 (2) | 751 | 0.99 (0.78, 1.27; p = 0.950)* |
| After delivery of placenta | 3 (3) | 678 | 0.80 (0.36, 1.81; p = 0.600)* | 2 (2) | 578 | 0.80 (0.36, 1.81; p = 0.600)* |
| Febrile morbidity | ||||||
| After delivery of fetus | 2 (2) | 208 | 1.30 (0.67, 2.49; p = 0.440)* | 1 (1) | 108 | 1.45 (0.71, 2.93; p = 0.310) |
| After delivery of placenta | 2 (2) | 586 | 0.45 (0.19, 1.04; p = 0.060)* | 1 (1) | 486 | 0.49 (0.21, 1.19; p = 0.120) |
| Incisional SSI | ||||||
| After delivery of fetus | 2 (4) | 208 | 0.63 (0.18, 2.22; p = 0.471)† | 1 (1) | 108 | 2.89 (0.12, 69.47; p = 0.510)* |
| After delivery of placenta | 3 (4) | 678 | 0.41 (0.25, 0.68; p = 0.001)† | 2 (2) | 578 | 0.42 (0.25, 0.73; p = 0.002)* |
k, number of studies; n, number of effect sizes; RR, risk ratio; CI, confidence interval; SSI, surgical site infection; Manual, manual placental removal method; Spontaneous, spontaneous placental removal method.
*Two-level meta-analysis; †three-level meta-analysis.