Demographic description of pregnant women and newborns
| Variables | Never smoking mothers n (%) | Quitting mothers n (%) | Non-quitting mothers n (%) | Total |
|---|---|---|---|---|
| *p<0.05 in corresponding χ2 tests for comparing quitting mothers with non-quitting mothers. | ||||
| Total | 8892 (93.6) | 400 (4.2) | 207 (2.2) | 9499 (100%) |
| Age of pregnant mothers | ||||
| <24 years | 1299 (14.6) | 134 (33.5) | 85 (41.1) | 1518 (16.0%) |
| 25–29 years | 3248 (36.5) | 143 (35.7) | 60 (29.0) | 3451 (36.3%) |
| >30 years | 4345 (48.9) | 123 (30.8) | 62 (30.9) | 4530 (47.7%) |
| Parity* | ||||
| First (primigravida) | 4692 (55.8) | 256 (64.0) | 96 (46.4) | 5044 (53.1%) |
| Second or more | 4198 (47.2) | 144 (36.0) | 111 (53.6) | 4452 (46.9%) |
| Education level of mothers* | ||||
| Middle school or below | 859 (9.7) | 46 (11.5) | 57 (27.5) | 962 (10.3%) |
| High school | 2938(33.0) | 270 (67.5) | 131(63.3) | 3339 (35.7%) |
| College or above | 4964 (55.8) | 79 (19.7) | 18 (8.7) | 5061 (54.0%) |
| Sex of newborn | ||||
| Male | 4685 (52.7) | 221 (55.2) | 99 (47.8) | 4805 (51.7%) |
| Female | 4205 (47.3) | 178 (44.5) | 107 (51.7) | 4490 (48.3%) |