Table 2.
Comparisons of perinatal outcomes before and after propensity score matching.
| Before matching | After matching | |||||||
|---|---|---|---|---|---|---|---|---|
| Perinatal outcomes | Non-BPAA (n = 194) | BPAA (n = 66) | p value | Non-BPAA (n = 52) | BPAA (n = 52) | p value | ||
| Surgical outcomes | ||||||||
| Total operation time (mins) | 90 (72–120) | 108 (80–127) | 0.026 | 107 (83–138) | 107 (81–127) | 0.682 | ||
| Length of hospital stay (days) | 10 (8–16) | 14 (10–23) | <0.001 | 10 (8–17) | 14 (9–22) | 0.184 | ||
| Postoperative length of hospital stay (days) | 5 (4–7) | 5 (4–7) | 0.772 | 6 (5–8) | 5 (4–7) | 0.008 | ||
| Intraoperative blood loss (ml) | 1,800 (800–3,000) | 1,000 (600–1,800) | 0.001 | 2,250 (1,500–4,000) | 1,000 (600–1,675) | <0.001 | ||
| Units of PRBC transfused | 4 (4–10) | 4 (4–8) | 0.194 | 8 (4–14) | 4 (2–6) | <0.001 | ||
| B-Lynch suture | 65 (33.5) | 11 (16.7) | 0.009 | 18 (34.6) | 8 (15.4) | 0.024 | ||
| Ligation of ascending branch of uterine artery | 33 (17.0) | 14 (21.2) | 0.444 | 12 (23.1) | 10 (19.2) | 0.631 | ||
| Tourniquet binding the lower uterine segment | 33 (17.0) | 8 (12.1) | 0.346 | 8 (15.4) | 5 (9.6) | 0.374 | ||
| Hysterectomy | 8 (4.1) | 0 (0.0) | 0.208 | 5 (9.6) | 0 (0.0) | 0.057 | ||
| Bladder repair | 16 (8.2) | 4 (6.1) | 0.565 | 7 (13.5) | 2 (3.8) | 0.160 | ||
| Systemic infections | 5 (2.6) | 0 (0.0) | 0.334 | 1 (1.9) | 0 (0.0) | 1.000 | ||
| Thrombotic complications | ||||||||
| Pulmonary embolism | 0 (0.0) | 1 (1.5) | 0.254 | 0 (0.0) | 1 (1.9) | 1.000 | ||
| DVT or thrombotic requiring therapy | 0 (0.0) | 1 (1.5) | 0.254 | 0 (0.0) | 0 (0.0) | – | ||
| DIC | 3 (1.5) | 0 (0.0) | 0.573 | 2 (3.8) | 0 (0.0) | 0.495 | ||
| ICU | 3 (1.5) | 1 (1.5) | 1.000 | 2 (3.8) | 1 (1.9) | 1.000 | ||
| Neonatal outcomes | ||||||||
| Full term birth | 130 (67.0) | 41 (62.1) | 0.470 | 37 (71.2) | 32 (61.5) | 0.299 | ||
| Apgar score (point) | 1 min | 0–7 | 37 (19.1) | 12 (18.2) | 0.873 | 8 (15.4) | 11 (21.2) | 0.415 |
| 8–10 | 157 (80.9) | 54 (81.8) | 44 (84.6) | 41 (78.8) | ||||
| 5 min | 0–7 | 20 (10.3) | 8 (12.1) | 0.682 | 3 (5.8) | 8 (15.4) | 0.364 | |
| 8–10 | 174 (89.7) | 58 (87.9) | 49 (94.2) | 44 (84.6) | ||||
| Neonatal weight (g) | 2,800 (2,400–3,200) | 2,875 (2,484–3,163) | 0.949 | 2,900 (2,400–3,238) | 2,800 (2,458–3,100) | 0.552 | ||
| NICU | 87 (44.8) | 23 (34.8) | 0.156 | 26 (50.0) | 17 (32.7) | 0.073 | ||
| Death | 13 (6.7) | 6 (9.1) | 0.584 | 2 (3.8) | 6 (11.5) | 0.269 | ||
| Adverse maternal event | 92 (86.8) | 14 (13.2) | <0.001 | 37 (80.4) | 9 (19.6) | <0.001 | ||
Values are median (interquartile range) or n (%). PRBC, packed red blood cells; BPAA, balloon placement in the abdominal aorta; DVT, deep vein thrombosis; DIC, disseminated intravascular coagulation; ICU, intensive care unit; NICU, neonatal intensive care unit.