From: Bacterial vaginosis and adverse outcomes among full-term infants: a cohort study
 | Full Term (N = 11,354) | Preterm (N = 975) | Total (N = 12,340) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
BV exposed | BV unexposed | BV exposed | BV unexposed | BV exposed | BV unexposed | |||||||
N = 2198 | N = 9156 | N = 267 | N = 708 | N = 2468 | N = 9872 | |||||||
 | n | % | n | % | n | % | n | % | n | % | n | % |
Age (years)* | ||||||||||||
 <20 | 324 | 14.7 | 666 | 7.3 | 39 | 14.6 | 56 | 7.9 | 363 | 14.7 | 723 | 7.3 |
 20-24 | 784 | 35.7 | 2095 | 22.9 | 79 | 29.6 | 179 | 25.3 | 866 | 35.1 | 2278 | 23.1 |
 25-29 | 620 | 28.2 | 2593 | 28.3 | 66 | 24.7 | 166 | 23.5 | 686 | 27.8 | 2760 | 28.0 |
 30-34 | 317 | 14.4 | 2375 | 26.0 | 44 | 16.5 | 188 | 26.6 | 361 | 14.6 | 2564 | 26.0 |
 35+ | 153 | 7.0 | 1424 | 15.6 | 39 | 14.6 | 119 | 16.8 | 192 | 7.8 | 1544 | 15.6 |
Race/Ethnicity* | ||||||||||||
 White | 1268 | 58.8 | 6842 | 71.7 | 152 | 58.9 | 497 | 71.8 | 1422 | 58.8 | 6981 | 71.7 |
 Black | 231 | 10.7 | 416 | 4.6 | 21 | 8.1 | 36 | 5.2 | 252 | 10.4 | 452 | 4.6 |
 Asian | 183 | 8.5 | 939 | 10.4 | 28 | 10.9 | 64 | 9.3 | 212 | 8.8 | 1006 | 10.3 |
 Hispanic | 410 | 19.0 | 979 | 10.8 | 39 | 15.1 | 73 | 10.6 | 449 | 18.6 | 1054 | 10.8 |
 Native American | 62 | 2.9 | 218 | 2.4 | 18 | 7.0 | 22 | 3.2 | 80 | 3.3 | 240 | 2.5 |
 Other | 4 | 0.2 | 9 | 0.1 | 0 | 0.0 | 0 | 0.0 | 4 | 0.2 | 9 | 0.1 |
Education* | ||||||||||||
 Less than H.S. | 689 | 31.6 | 1639 | 18.1 | 89 | 34.1 | 148 | 21.4 | 779 | 31.9 | 1791 | 18.4 |
 H.S. grad/some college | 1132 | 51.9 | 4134 | 45.8 | 129 | 49.4 | 323 | 46.6 | 1263 | 51.7 | 4460 | 45.8 |
 College graduate | 360 | 16.5 | 3263 | 36.1 | 43 | 16.5 | 222 | 32.0 | 403 | 16.5 | 3486 | 35.8 |
Nulliparous* | 3733 | 47.2 | 1035 | 41.4 | 118 | 45.2 | 309 | 45.2 | 1154 | 47.0 | 4045 | 41.7 |
Cesarean delivery* | 477 | 21.7 | 2479 | 27.1 | 78 | 29.3 | 269 | 38.1 | 555 | 22.5 | 2751 | 27.9 |
Low Birth Weight (<2500Â g)* | 41 | 1.9 | 139 | 1.5 | 158 | 60.1 | 344 | 49.1 | 199 | 8.1 | 483 | 4.9 |
Small for gestational age | 227 | 10.3 | 790 | 8.6 | 22 | 8.2 | 76 | 10.7 | 249 | 10.1 | 866 | 8.8 |
 missing | 0 | (0) | 12 | (0.13) | 20 | (7.49) | 15 | (2.12) | 23 | (0.93) | 35 | (0.35) |
Smoking* | 360 | 16.5 | 921 | 10.1 | 42 | 15.9 | 84 | 12.0 | 404 | 16.5 | 1006 | 10.3 |
Kotelchuck Index | ||||||||||||
 Inadequate | 374 | 17.8 | 1203 | 15.2 | 29 | 14.2 | 85 | 16.7 | 403 | 17.5 | 1291 | 15.3 |
 Intermediate | 475 | 22.6 | 1763 | 22.3 | 39 | 19.1 | 76 | 14.9 | 514 | 22.3 | 1839 | 21.8 |
 Adequate | 899 | 42.7 | 3658 | 46.3 | 52 | 25.5 | 150 | 29.5 | 951 | 41.2 | 3808 | 45.2 |
 Adequate Plus | 356 | 16.9 | 1283 | 16.2 | 84 | 41.2 | 198 | 38.9 | 440 | 19.1 | 1481 | 17.6 |
 missing | 94 | (4.3) | 1249 | (13.6) | 63 | (23.6) | 199 | (28.1) | 160 | (6.5) | 1453 | (14.7) |
STI*†| 296 | 13.5 | 379 | 4.1 | 34 | 12.7 | 42 | 5.9 | 330 | 13.4 | 422 | 4.3 |
Maternal comorbidities‡ | 236 | 10.8 | 1022 | 11.3 | 53 | 20.0 | 184 | 26.3 | 289 | 11.7 | 1207 | 12.4 |
 missing | 2 | (0.1) | 92 | (1.0) | 2 | (0.8) | 7 | (1.0) | 5 | (0.2) | 99 | (1.0) |
Chorioamnionitis* | 62 | 2.8 | 265 | 2.9 | 22 | 8.2 | 41 | 5.8 | 84 | 3.4 | 306 | 3.1 |
Meconium (moderate/heavy) | 198 | 9.0 | 510 | 5.6 | 6 | 2.3 | 19 | 2.7 | 204 | 8.3 | 530 | 5.4 |
 missing | 4 | (0.2) | 98 | (1.1) | 20 | (7.5) | 26 | (3.7) | 25 | (1.0) | 126 | (1.3) |