Table 1 Demographic and clinical characteristics of commercially insured pregnant women (12–55 years of age) in the United States by birth outcome, 2007–2015
Total population N = 168,025 (100%) | Full-term birth N = 133,459 (79.4%) | Preterm birth N = 12,166 (7.2%) | Postterm birth N = 20,802 (12.4%) | Stillbirth N = 1598 (1.0%) | P-value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
N | Col% | N | Col% | N | Col% | N | Col% | N | Col% | ||
Age category, years | < 0.01 | ||||||||||
12–17 | 1920 | 1.1 | 1452 | 1.1 | 165 | 1.4 | 280 | 1.3 | 23 | 1.4 | |
18–25 | 31,591 | 18.8 | 24,731 | 18.5 | 2276 | 18.7 | 4287 | 20.6 | 297 | 18.6 | |
26–34 | 97,905 | 58.3 | 77,734 | 58.3 | 6794 | 55.8 | 12,536 | 60.3 | 841 | 52.6 | |
≥ 35 | 36,609 | 21.8 | 29,542 | 22.1 | 2931 | 24.1 | 3699 | 17.8 | 437 | 27.4 | |
Region | < 0.01 | ||||||||||
East | 35,220 | 21.0 | 27,042 | 20.2 | 2460 | 20.2 | 5404 | 25.9 | 314 | 19.6 | |
Midwest | 52,909 | 31.5 | 41,321 | 31.0 | 3584 | 29.5 | 7527 | 36.2 | 477 | 29.9 | |
South | 54,863 | 32.6 | 45,333 | 34.0 | 4293 | 35.3 | 4635 | 22.3 | 602 | 37.7 | |
West | 25,033 | 14.9 | 19,763 | 14.8 | 1829 | 15.0 | 3236 | 15.6 | 205 | 12.8 | |
Comorbidity score | < 0.01 | ||||||||||
0 | 79,460 | 47.3 | 61,669 | 46.2 | 4078 | 33.5 | 13,080 | 62.9 | 633 | 39.6 | |
1 | 39,959 | 23.8 | 33,299 | 25.0 | 2075 | 17.1 | 4298 | 20.7 | 287 | 18.0 | |
≥ 2 | 48,606 | 28.9 | 38,491 | 28.8 | 6013 | 49.4 | 3424 | 16.4 | 678 | 42.4 | |
Cesarean delivery | < 0.01 | ||||||||||
Yes | 40,749 | 24.3 | 33,412 | 25.0 | 8644 | 71.1 | 3615 | 17.4 | 200 | 12.5 | |
No | 127,276 | 75.7 | 100,047 | 75.0 | 3522 | 28.9 | 17,187 | 82.6 | 1398 | 87.5 | |
Obesity | < 0.01 | ||||||||||
Yes | 12,708 | 7.6 | 9987 | 7.5 | 1147 | 9.4 | 1418 | 6.8 | 156 | 9.8 | |
No | 155,317 | 92.4 | 123,472 | 92.5 | 11,019 | 90.6 | 19,384 | 93.2 | 1442 | 90.2 | |
Cancer | 0.49 | ||||||||||
Yes | 1270 | 0.8 | 1000 | 0.8 | 106 | 0.9 | 152 | 0.7 | 12 | 0.7 | |
No | 166,755 | 99.2 | 132,459 | 99.2 | 12,060 | 99.1 | 20,650 | 99.3 | 1586 | 99.3 | |
Back pain | < 0.01 | ||||||||||
Yes | 30,441 | 18.1 | 24,121 | 18.1 | 2296 | 18.9 | 3785 | 18.2 | 239 | 15.0 | |
No | 137,584 | 81.9 | 109,338 | 81.9 | 9870 | 81.1 | 17,017 | 81.8 | 1359 | 85.0 | |
Abdominal pain | < 0.01 | ||||||||||
Yes | 37,766 | 22.5 | 29,851 | 22.4 | 3491 | 28.7 | 4045 | 19.4 | 379 | 23.7 | |
No | 130,259 | 77.5 | 103,608 | 77.6 | 8675 | 71.3 | 16,757 | 80.6 | 1219 | 76.3 | |
Arthritis pain | < 0.01 | ||||||||||
Yes | 35,090 | 20.9 | 27,645 | 20.7 | 2653 | 21.8 | 4478 | 21.5 | 314 | 19.7 | |
No | 132,935 | 79.1 | 105,814 | 79.3 | 9513 | 78.2 | 16,324 | 78.5 | 1284 | 80.3 | |
Headache | < 0.01 | ||||||||||
Yes | 6564 | 3.9 | 5171 | 3.9 | 575 | 4.7 | 748 | 3.6 | 70 | 4.4 | |
No | 161,461 | 96.1 | 128,288 | 96.1 | 11,591 | 95.3 | 20,054 | 96.4 | 1528 | 95.6 | |
Anxiety disorders | < 0.01 | ||||||||||
Yes | 10,059 | 6.0 | 7961 | 6.0 | 863 | 7.1 | 1121 | 5.4 | 114 | 7.1 | |
No | 157,966 | 94.0 | 125,498 | 94.0 | 11,303 | 92.9 | 19,681 | 94.6 | 1484 | 92.9 | |
Alcohol use disorder | 0.01 | ||||||||||
Yes | 295 | 0.2 | 214 | 0.2 | 29 | 0.2 | 46 | 0.2 | 6 | 0.4 | |
No | 167,730 | 99.8 | 133,245 | 99.8 | 12,137 | 99.8 | 20,756 | 99.8 | 1592 | 99.6 | |
Tobacco use disorder | < 0.01 | ||||||||||
Yes | 7614 | 4.5 | 6047 | 4.5 | 720 | 5.9 | 769 | 3.7 | 78 | 4.9 | |
No | 160,411 | 95.5 | 127,412 | 95.5 | 11,446 | 94.1 | 20,033 | 96.3 | 1520 | 95.1 | |
Drug use disorder | 0.02 | ||||||||||
Yes | 342 | 0.2 | 249 | 0.2 | 30 | 0.3 | 58 | 0.3 | 5 | 0.3 | |
No | 167,683 | 99.8 | 133,210 | 99.8 | 12,136 | 99.7 | 20,744 | 99.7 | 1593 | 99.7 | |