Table 1.
Maternal characteristics and pregnancy-time completed after the 20th week, by crash involvement, North Carolina, 2001–2008
| No Motor Vehicle Crashes During Pregnancy |
First Motor Vehicle Crash During Pregnancy |
Second or Subsequent Motor Vehicle Crashes During Pregnancy |
||||
|---|---|---|---|---|---|---|
| Pregnancy days | % | Pregnancy days | % | Pregnancy days | % | |
| Maternal age, years | ||||||
| 16–17 | 3,355,531 | 3 | 41,315 | 2 | 1,424 | 2 |
| 18–24 | 39,765,905 | 35 | 1,121,819 | 43 | 35,226 | 53 |
| 25–34 | 56,434,076 | 50 | 1,173,630 | 45 | 24,543 | 37 |
| 35+ | 13,583,100 | 12 | 255,832 | 10 | 4,858 | 7 |
| Missing | 0 | 0 | 0 | 0 | 0 | 0 |
| Maternal race and Hispanic ethnicity | ||||||
| Non-Hispanic white | 65,297,653 | 58 | 1,486,112 | 57 | 31,913 | 48 |
| Non-Hispanic black | 25,156,827 | 22 | 787,850 | 30 | 26,176 | 40 |
| Hispanic | 17,740,392 | 16 | 219,940 | 8 | 4,895 | 7 |
| Non-Hispanic other | 4,817,986 | 4 | 97,708 | 4 | 3,067 | 5 |
| Missing | 125,754 | <1 | 986 | <1 | 0 | 0 |
| Gestational age, weeks | ||||||
| 20–27 | 48,023,344 | 42 | 924,075 | 36 | 19,791 | 30 |
| 28–32 | 29,516,522 | 26 | 700,060 | 27 | 17,669 | 27 |
| 33–36 | 22,379,033 | 20 | 589,464 | 23 | 17,128 | 26 |
| 37+ | 13,219,713 | 12 | 378,997 | 15 | 11,463 | 17 |
| Missing | 0 | 0 | 0 | 0 | 0 | 0 |
| Maternal education | ||||||
| Less than high school | 25,292,305 | 22 | 442,135 | 17 | 12,099 | 18 |
| High school graduate | 32,822,304 | 29 | 896,299 | 35 | 26,583 | 40 |
| Some college | 24,856,817 | 22 | 685,269 | 26 | 18,649 | 28 |
| College graduate | 29,950,877 | 27 | 565,743 | 22 | 8,534 | 13 |
| Missing | 216,309 | <1 | 3,150 | <1 | 186 | <1 |
| Marital status | ||||||
| Married | 71,243,242 | 63 | 1,384,998 | 53 | 26,311 | 40 |
| Not married | 41,891,307 | 37 | 1,207,478 | 47 | 39,740 | 60 |
| Missing | 4,063 | <1 | 120 | <1 | 0 | 0 |
| Prenatal tobacco use | ||||||
| Yes | 13,278,892 | 12 | 360,853 | 14 | 10,254 | 16 |
| No | 99,740,283 | 88 | 2,229,106 | 86 | 55,760 | 84 |
| Missing | 119,437 | <1 | 2,637 | <1 | 37 | <1 |
| Prenatal alcohol use | ||||||
| Yes | 530,507 | 1 | 10,981 | 1 | 0 | 0 |
| No | 112,480,405 | 99 | 2,579,104 | 99 | 66,014 | 100 |
| Missing | 127,700 | <1 | 2,511 | <1 | 37 | <1 |
| Prenatal care initiation | ||||||
| 1st Trimester | 93,999,726 | 84 | 2,171,528 | 84 | 52,771 | 80 |
| 2nd Trimester | 14,725,518 | 13 | 335,291 | 13 | 10,816 | 17 |
| 3rd Trimester | 1,056,294 | 1 | 23,388 | 1 | 615 | 1 |
| None | 2,509,613 | 2 | 41,982 | 2 | 1,304 | 2 |
| Missing | 847,461 | <1 | 20,407 | <1 | 545 | <1 |
| Parity | ||||||
| 0 | 46,531,820 | 41 | 1,104,430 | 43 | 28,053 | 42 |
| 1 | 37,865,118 | 33 | 838,154 | 32 | 20,160 | 31 |
| ≥2 | 28,690,826 | 25 | 648,659 | 25 | 17,838 | 27 |
| Missing | 50,848 | <1 | 1,353 | <1 | 0 | 0 |