TABLE 1—
Sample Characteristics, Unweighted Sample Size and Weighted Percentage: National Health Interview Survey, United States, 2010–2016
| Reproductive-Aged Women, No. (%) | Pregnant Women, No. (%) | |
| Sample size | ||
| Total | 128 352 | 2 179 |
| Pre-ACA (2010–2013) | 74 175 | 1 263 |
| Post-ACA (2014–2015) | 54 177 | 916 |
| Age, y | ||
| 18–21 | 17 706 (15) | 234 (13) |
| 22–29 | 37 684 (30) | 1 037 (47) |
| 30–39 | 48 511 (36) | 847 (37) |
| 40–44 | 24 451 (18) | 61 (3) |
| Race | ||
| White | 94 424 (76) | 1 593 (77) |
| Black | 20 736 (15) | 389 (15) |
| Other | 13 192 (8) | 197 (8) |
| Hispanic ethnicity | 32 996 (19) | 571 (21) |
| Marriage status | ||
| Married | 58 912 (45) | 1 318 (65) |
| Missing | 360 (0.3) | 2 (0.04) |
| Education | ||
| < High school | 17 412 (11) | 366 (15) |
| High school | 58 638 (46) | 907 (41) |
| Any postsecondary | 50 849 (42) | 900 (44) |
| Missing | 1 453 (1) | 6 (0.2) |
| Citizenship status | ||
| US citizen | 109 725 (89) | 1 798 (84) |
| Missing | 637 (0.5) | 1 (0.02) |
| Region of residence | ||
| Northeast | 20 008 (17) | 281 (15) |
| Midwest | 24 898 (22) | 470 (24) |
| South | 46 197 (37) | 805 (38) |
| West | 37 249 (24) | 623 (23) |
| Currently employed | 92 934 (73) | 1 528 (71) |
| Family income ≤ 185% FPL | 51 109 (36) | 998 (40) |
Note. ACA = Affordable Care Act; FPL = federal poverty level according to the US Department of Health and Human Services 2017 Poverty Guidelines (https://aspe.hhs.gov/2017-poverty-guidelines).