TABLE 4.
Maternal outcomes by gestational age and type of labor
| GA, wk | Type of onset | C/S | Chorioamnionitis | Endometritis | ICU admission | Hysterectomy | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frequency, n (%) | Frequency, n (%) | Frequency, n (%) | Frequency, n (%) | Frequency, n (%) | Length of stay | ||||||||||||||
| No | Yes | P value | No | Yes | P value | No | Yes | P value | No | Yes | P value | No | Yes | P value | Mean | SD | P value | ||
| 34 | Spontaneous | 817 (93.7) | 55 (6.3) | < .0001 | 388 (92.6) | 31 (7.4) | .25 | 439 (99.8) | 1 (0.2) | .02 | 676 (98.0) | 14 (2.0) | .69 | 870 (99.8) | 2 (0.2) | .05 | 3.3 | 3.7 | < .0001 |
| Elective | 38 (82.6) | 8 (17.4) | 7 (87.5) | 1 (12.5) | 2 (100) | 0 (0.0) | 45 (100) | 0 (0.0) | 46 (100) | 0 (0.0) | – | 5.2 | 7.1 | – | |||||
| Indicated | 144 (73.1) | 53 (26.9) | 121 (96.8) | 4 (3.2) | 97 (98.0) | 2 (2.0) | 173 (98.3) | 3 (1.7) | 197 (100) | 0 (0.0) | – | 6.1 | 6.1 | – | |||||
| c/s w/o labor | 0 (0.0) | 120 (100) | 71 (95.9) | 3 (4.1) | 44 (95.7) | 2 (4.3) | 99 (97.1) | 3 (2.9) | 118 (98.3) | 2 (1.7) | – | 6.3 | 4.9 | – | |||||
| 35 | Spontaneous | 1451 (94.7) | 81 (5.3) | < .0001 | 700 (97.0) | 22 (3.0) | .61 | 726 (100) | 0 (0.0) | .004 | 1243 (98.7) | 17 (1.3) | .68 | 1532 (100) | – | – | 2.5 | 2.6 | < .0001 |
| Elective | 71 (83.5) | 14 (16.5) | 16 (100) | 0 (0.0) | 6 (100) | 0 (0.0) | 85 (100) | 0 (0.0) | 85 (100) | – | – | 2.8 | 1.5 | – | |||||
| Indicated | 242 (72.9) | 90 (27.1) | 198 (97.1) | 6 (2.9) | 157 (98.1) | 3 (1.9) | 287 (98.6) | 4 (1.4) | 332 (100) | – | – | 4.1 | 2.8 | – | |||||
| c/s w/o labor | 0 (0.0) | 161 (100) | 99 (99.0) | 1 (1.0) | 66 (98.5) | 1 (1.5) | 135 (99.3) | 1 (0.7) | 161 (100) | – | – | 5.2 | 4.6 | – | |||||
| 36 | Spontaneous | 3003 (93.3) | 214 (6.7) | < .0001 | 1391 (95.7) | 62 (4.3) | .19 | 1493 (99.6) | 6 (0.4) | .21 | 2598 (99.5) | 14 (0.5) | .09 | 3217 (100) | – | – | 2.3 | 2.5 | < .0001 |
| Elective | 141 (80.6) | 34 (19.4) | 57 (96.6) | 2 (3.4) | 29 (100) | 0 (0.0) | 175 (100) | 0 (0.0) | 175 (100) | – | – | 2.7 | 1.1 | – | |||||
| Indicated | 621 (73.8) | 220 (26.2) | 460 (97.7) | 11 (2.3) | 376 (98.9) | 4 (1.1) | 741 (99.3) | 5 (0.7) | 841 (100) | – | – | 3.4 | 2.5 | – | |||||
| c/s w/o labor | 0 (0.0) | 258 (100) | 168 (97.7) | 4 (2.3) | 126 (98.4) | 2 (1.6) | 217 (98.2) | 4 (1.8) | 258 (100) | – | – | 5.0 | 5.9 | – | |||||
| 37 | Spontaneous | 7160 (94.8) | 392 (5.2) | < .0001 | 3085 (96.6) | 108 (3.4) | .08 | 3300 (99.7) | 10 (0.3) | < .0001 | 6139 (99.8) | 11 (0.2) | < .0001 | 7550 (100) | 2 (0.0) | .86 | 2.0 | 1.0 | < .0001 |
| Elective | 525 (89.9) | 59 (10.1) | 268 (99.3) | 2 (0.7) | 214 (100) | 0 (0.0) | 576 (99.8) | 1 (0.2) | 584 (100) | 0 (0.0) | – | 2.4 | 1.1 | – | |||||
| Indicated | 1498 (81.5) | 339 (18.5) | 883 (96.8) | 29 (3.2) | 674 (99.6) | 3 (0.4) | 1642 (99.2) | 13 (0.8) | 1836 (99.9) | 1 (0.1) | – | 2.8 | 1.7 | – | |||||
| c/s w/o labor | 0 (0.0) | 480 (100) | 311 (97.8) | 7 (2.2) | 235 (96.3) | 9 (3.7) | 403 (98.8) | 5 (1.2) | 480 (100) | 0 (0.0) | – | 3.8 | 2.4 | – | |||||
| 38 | Spontaneous | 15,748 (94.3) | 955 (5.7) | < .0001 | 6295 (96.3) | 239 (3.7) | < .0001 | 7317 (99.6) | 26 (0.4) | .04 | 12,786 (99.8) | 32 (0.2) | .009 | 16,699 (100) | 4 (0.0) | .37 | 2.0 | 1.0 | < .0001 |
| Elective | 2228 (88.8) | 280 (11.2) | 1272 (99.5) | 7 (0.5) | 1004 (99.8) | 2 (0.2) | 2468 (99.9) | 3 (0.1) | 2507 (100) | 1 (0.0) | – | 2.3 | 0.9 | – | |||||
| Indicated | 2624 (81.5) | 596 (18.5) | 1315 (97.1) | 39 (2.9) | 991 (99.3) | 7 (0.7) | 2818 (99.4) | 16 (0.6) | 3220 (100) | 0 (0.0) | – | 2.6 | 1.1 | – | |||||
| c/s w/o labor | 0 (0.0) | 1012 (100) | 666 (98.4) | 11 (1.6) | 484 (99.0) | 5 (1.0) | 825 (99.5) | 4 (0.5) | 1011 (99.9) | 1 (0.1) | – | 3.5 | 2.2 | – | |||||
| 39 | Spontaneous | 22,067 (93.1) | 1639 (6.9) | < .0001 | 9065 (95.6) | 422 (4.4) | < .0001 | 11,691 (99.7) | 37 (0.3) | < .0001 | 16,667 (99.7) | 57 (0.3) | .009 | 23,706 (100) | 0 (0.0) | .003 | 2.1 | 1.1 | < .0001 |
| Elective | 9181 (94.1) | 573 (5.9) | 1712 (97.9) | 36 (2.1) | 958 (99.5) | 5 (0.5) | 9698 (99.9) | 13 (0.1) | 9750 (100) | 4 (0.0) | – | 2 | 0.7 | – | |||||
| Indicated | 2542 (78.5) | 695 (21.5) | 1368 (95.0) | 72 (5.0) | 966 (98.9) | 11 (1.1) | 2775 (99.6) | 11 (0.4) | 3237 (100) | 0 (0.0) | – | 2.6 | 1.1 | – | |||||
| c/s w/o labor | 0 (0.0) | 1166 (100) | 749 (96.4) | 28 (3.6) | 408 (98.6) | 6 (1.4) | 967 (99.6) | 4 (0.4) | 1165 (99.9) | 1 (0.1) | – | 3.5 | 1.6 | – | |||||
| 40 | Spontaneous | 16,924 (90.2) | 1837 (9.8) | < .0001 | 7169 (94.4) | 423 (5.6) | .83 | 10,110 (99.7) | 32 (0.3) | < .0001 | 12,155 (99.7) | 32 (0.3) | .04 | 18,760 (100) | 1 (0.0) | < .0001 | 2.2 | 0.9 | < .0001 |
| Elective | 2833 (88.4) | 371 (11.6) | 561 (93.7) | 38 (6.3) | 186 (99.5) | 1 (0.5) | 3185 (100) | 1 (0.0) | 3203 (100) | 1 (0.0) | – | 2.1 | 0.8 | – | |||||
| Indicated | 3168 (73.7) | 1129 (26.3) | 2041 (94.6) | 117 (5.4) | 1321 (99.8) | 3 (0.2) | 3613 (99.7) | 11 (0.3) | 4296 (100) | 1 (0.0) | – | 2.8 | 1.1 | – | |||||
| c/s w/o labor | 0 (0.0) | 561 (100) | 360 (94.0) | 23 (6.0) | 237 (96.0) | 10 (4.0) | 458 (100) | 0 (0.0) | 559 (99.6) | 2 (0.4) | – | 3.5 | 1.4 | – | |||||
| 41 | Spontaneous | 4116 (87.7) | 576 (12.3) | < .0001 | 1552 (93.8) | 102 (6.2) | .42 | 3219 (99.6) | 13 (0.4) | .004 | 2260 (99.5) | 12 (0.5) | .41 | 4692 (100) | – | – | 2.3 | 0.9 | < .0001 |
| Elective | 147 (79.5) | 38 (20.5) | 109 (94.8) | 6 (5.2) | 67 (100) | 0 (0.0) | 185 (100) | 0 (0.0) | 185 (100) | – | – | 2.6 | 1.0 | – | |||||
| Indicated | 2401 (71.6) | 952 (28.4) | 1618 (93.5) | 112 (6.5) | 870 (99.1) | 8 (0.9) | 2887 (99.7) | 9 (0.3) | 3353 (100) | – | – | 2.7 | 1.2 | – | |||||
| c/s w/o labor | 0 (0.0) | 180 (100) | 110 (90.2) | 12 (9.8) | 103 (97.2) | 3 (2.8) | 133 (100) | 0 (0.0) | 180 (100) | – | – | 3.6 | 1.1 | – | |||||
| 42 | Spontaneous | 347 (85.0) | 61 (15.0) | < .0001 | 172 (96.1) | 7 (3.9) | .77 | 287 (100) | 0 (0.0) | .44 | 199 (100) | – | 407 (99.8) | 1 (0.2) | .87 | 2.3 | 0.9 | < .0001 | |
| Elective | 3 (100) | 0 (0.0) | 3 (100) | 0 (0.0) | 3 (100) | 0 (0.0) | 3 (100) | – | 3 (100) | 0 (0.0) | – | 1.3 | 0.6 | – | |||||
| Indicated | 188 (70.1) | 80 (29.9) | 154 (95.1) | 8 (4.9) | 110 (99.1) | 1 (0.9) | 180 (100) | – | 268 (100) | 0 (0.0) | – | 3.1 | 1.3 | – | |||||
| c/s w/o labor | 0 (0.0) | 21 (100) | 17 (100) | 0 (0.0) | 6 (100) | 0 (0.0) | 19 (100) | – | 21 (100) | 0 (0.0) | – | 3.1 | 0.5 | – | |||||
c/s, cesarean section; ICU, intensive care unit; w/o, without.