Table 1.
The distribution of characteristics of all women according to their smoking status during pregnancy; aggregated years from 2010 to 2017
| Overall na (%b) | Smoker na (%b) | Nonsmoker na (%b) | P-valuec | |
|---|---|---|---|---|
| Total | 27,912,380 (100.0) | 2,261,826 (8.1) | 25,650,554 (91.9) | |
| Age | < 0.001 | |||
| Under 15 | 21,028 (0.1) | 532 (0.0) | 20,496 (0.1) | |
| 15–19 | 185,7349 (6.7) | 193,188 (8.5) | 1,664,161 (6.5) | |
| 20–24 | 6,118,273 (21.9) | 768,677 (34.0) | 5,349,596 (20.9) | |
| 25–29 | 8,037,230 (28.8) | 698,979 (30.9) | 7,338,251 (28.6) | |
| 30–34 | 7,450,554 (26.7) | 408,433 (18.1) | 7,042,121 (27.5) | |
| 35–39 | 3,583,835 (12.8) | 159,177 (7.0) | 3,424,658 (13.4) | |
| 40–44 | 784,035 (2.8) | 31,486 (1.4) | 752,549 (2.9) | |
| 45 and over | 60,076 (0.2) | 1354 (0.1) | 58,722 (0.2) | |
| Race | < 0.001 | |||
| White | 21,280,913 (76.2) | 1,891,554 (83.6) | 19,389,359 (75.6) | |
| Black | 4,372,566 (15.7) | 296,856 (13.1) | 4,075,710 (15.9) | |
| American Indian/Alaskan Native | 307,120 (1.1) | 50,974 (2.3) | 256,146 (1.0) | |
| Asian/Pacific Islander | 1,951,781 (7.0) | 22,442 (1.0) | 1,929,339 (7.5) | |
| Educational attainment | < 0.001 | |||
| Less than 12 years | 4,342,229 (15.7) | 585,466 (26.0) | 3,756,763 (14.8) | |
| High school diploma or GED | 6,894,215 (25.0) | 907,369 (40.4) | 5,986,846 (23.6) | |
| Some college or associate’s degree | 7,988,791 (29.0) | 680,190 (30.2) | 7,308,601 (28.8) | |
| Bachelor’s degree | 5,320,424 (19.3) | 62,209 (2.8) | 5,258,215 (20.7) | |
| Master’s degree or higher | 3,043,790 (11.0) | 13,377 (0.6) | 3,030,413 (12.0) | |
| Year | < 0.001 | |||
| 2010 | 2,620,675 (9.4) | 241,782 (10.7) | 2,378,893 (9.3) | |
| 2011 | 3,136,124 (11.2) | 280,300 (12.4) | 2,855,824 (11.1) | |
| 2012 | 3,317,588 (11.9) | 288,811 (12.8) | 3,028,777 (11.8) | |
| 2013 | 3,392,135 (12.2) | 287,250 (12.7) | 3,104,885 (12.1) | |
| 2014 | 3,779,767 (13.5) | 316,215 (14.0) | 3,463,552 (13.5) | |
| 2015 | 3,883,535 (13.9) | 299,705 (13.3) | 3,583,830 (14.0) | |
| 2016 | 3,936,643 (14.1) | 282,788 (12.5) | 3,653,855 (14.2) | |
| 2017 | 3,845,913 (13.8) | 264,975 (11.7) | 3,580,938 (14.0) |
aunweighted frequency
b% = weighted column percentage
cP-value corresponding to the Rao-Scott Chi-Square tests