Table 2 Patient Variables by PPH risk assessment category (overall cohort, N = 56,903).
From: Obstetric hemorrhage risk assessment tool predicts composite maternal morbidity
Patient variable | Low (n = 14,803) | Medium (n = 26,163) | High (n = 15,937) | Overall P | Medium vs low P | High vs low P |
|---|---|---|---|---|---|---|
Maternal age | 27.5 ± 6.3 | 28.4 ± 6.5 | 29.1 ± 6.8 | < 0.0001 | < 0.0001 | < 0.0001 |
Delivery BMI | 29.4 ± 5.9 | 31.7 ± 6.9 | 34.6 ± 8.1 | < 0.0001 | < 0.0001 | < 0.0001 |
Delivery mode | < 0.0001 | < 0.0001 | < 0.0001 | |||
CD* | 1214 (8.2) | 12,735 (48.7) | 7326 (46.0) | |||
Vaginal | 13,541 (91.5) | 13,240 (50.6) | 8439 (53.0) | |||
VBAC* | 48 (0.3) | 188 (0.7) | 172 (1.1) | |||
Race | < 0.0001 | < 0.0001 | < 0.0001 | |||
Black | 2374 (16.0) | 4060 (15.5) | 3454 (21.7) | |||
White | 7453 (50.4) | 14,143 (54.1) | 7811 (49.0) | |||
Asian | 712 (4.8) | 1095 (4.2) | 703 (4.4) | |||
Other/Unk | 4264 (28.8) | 6865 (26.2) | 3969 (24.9) | |||
Insurance | < 0.0001 | < 0.0001 | < 0.0001 | |||
Private | 8317 (56.2) | 14,048 (53.7) | 9195 (57.7) | |||
Medicaid | 4931 (33.3) | 8834 (33.8) | 4925 (30.9) | |||
Self-pay | 401 (2.7) | 954 (3.7) | 282 (1.8) | |||
Other/Unk* | 1154 (7.8) | 2327 (8.9) | 1535 (9.6) | |||
Marital status | 0.0024 | 0.0004 | 0.0140 | |||
Married | 7079 (47.8) | 12,897 (49.3) | 7830 (49.1) | |||
Single | 6969 (47.1) | 11,809 (45.1) | 7244 (45.5) | |||
Other/Unk | 755 (5.1) | 1457 (5.6) | 863 (5.4) | |||
Gestational diabetes | 550 (3.7) | 1784 (6.8) | 1466 (9.2) | < 0.0001 | < 0.0001 | < 0.0001 |
Pre-gestational diabetes | 72 (0.5) | 324 (1.2) | 310 (2.0) | < 0.0001 | < 0.0001 | < 0.0001 |
Chronic hypertension | 76 (0.5) | 399 (1.5) | 446 (2.8) | < 0.0001 | < 0.0001 | < 0.0001 |
Smoke during | 623 (4.2) | 1249 (4.8) | 810 (5.1) | 0.0012 | 0.0085 | 0.0003 |
Preeclampsia | 127 (0.9) | 688 (2.6) | 647 (4.1) | < 0.0001 | < 0.0001 | < 0.0001 |
Inter-pregnancy interval < 1 year | 237 (1.6) | 591 (2.3) | 394 (2.5) | < 0.0001 | < 0.0001 | < 0.0001 |
Placenta previa | 6 (< 0.1) | 51 (0.2) | 142 (0.9) | < 0.0001 | < 0.0001 | < 0.0001 |
DIC | – | 2 (< 0.1) | 19 (0.1) | < 0.0001 | 0.5384 | < 0.0001 |
History of PPH* | 125 (0.8) | 608 (2.3) | 1162 (7.3) | < 0.0001 | < 0.0001 | < 0.0001 |
Dinoprostone | 477 (3.2) | 2398 (9.2) | 1911 (12.0) | < 0.0001 | < 0.0001 | < 0.0001 |
Misoprostol | 1094 (7.4) | 3550 (13.6) | 2821 (17.7) | < 0.0001 | < 0.0001 | < 0.0001 |
Oxytocin | 12,174 (82.2) | 23,693 (90.6) | 14,453 (90.7) | < 0.0001 | < 0.0001 | < 0.0001 |
Use of antibiotics | 6312 (42.6) | 16,472 (63.0) | 10,455 (65.6) | < 0.0001 | < 0.0001 | < 0.0001 |
Vacuum | 434 (2.9) | 1603 (6.1) | 1163 (7.3) | < 0.0001 | < 0.0001 | < 0.0001 |
Forceps | 92 (0.6) | 212 (0.8) | 257 (1.6) | < 0.0001 | 0.0324 | < 0.0001 |
Eclampsia | 15 (0.1) | 61 (0.2) | 50 (0.3) | 0.0003 | 0.0029 | < 0.0001 |
HELLP* | 3 (< 0.1) | 15 (< 0.1) | 10 (< 0.1) | 0.1767 | 0.0855 | 0.0703 |
Number of previous CD | < 0.0001 | < 0.0001 | < 0.0001 | |||
0 | 14,697 (99.3) | 23,032 (88.0) | 14,164 (88.9) | |||
1 | 73 (0.5) | 1903 (7.3) | 1033 (6.5) | |||
2+ | 33 (0.2) | 1228 (4.7) | 740 (4.6) | |||
Gestational age < 39 weeks | 5793 (39.1) | 9705 (37.1) | 6393 (40.1) | < 0.0001 | < 0.0001 | 0.0792 |
Intrapartum abruption | 57 (0.4) | 107 (0.4) | 291 (1.8) | < 0.0001 | 0.7127 | < 0.0001 |
Placenta accreta | – | 3 (< 0.1) | 38 (0.2) | < 0.0001 | 0.5578 | < 0.0001 |
Intrapartum bleeding | 3 (< 0.1) | 11(< 0.1) | 21 (0.1) | < 0.0001 | 0.2519 | 0.0005 |
Platelets < 150,000 | 2039 (13.8) | 3793 (14.5) | 2134 (13.4) | 0.0042 | 0.0441 | 0.3260 |
Hematocrit < 32% | 2735 (18.5) | 5751 (22.0) | 3418 (21.5) | < 0.0001 | < 0.0001 | < 0.0001 |
Parity | < 0.0001 | < 0.0001 | < 0.0001 | |||
0 | 3217 (21.7) | 5023 (19.2) | 3525 (22.1) | |||
1 | 7095 (47.9) | 12,328 (47.1) | 7344 (46.1) | |||
2 | 2322 (15.7) | 4328 (16.2) | 2260 (14.2) | |||
3 | 1411 (9.5) | 2790 (10.7) | 1512 (9.5) | |||
4+ | 758 (5.1) | 1784 (6.8) | 1296 (8.1) | |||
Multiple gestation | 33 (0.2) | 718 (2.7) | 911 (5.7) | < 0.0001 | < 0.0001 | < 0.0001 |
