Table 1 Demographic characteristics of 488,918 births according to maternal smoking habits during pregnancy, Colorado Birth Registry, 1989 to 1998.
Number (%) | Reported maternal smoking (%) | |
|---|---|---|
Sex | ||
male | 252,066 (51.6) | 13.4 |
female | 236,852 (48.4) | 13.1 |
Gestational age | ||
<37 weeks | 16,057 (3.3) | 14.7 |
"term" | 472,861 (96.7) | 13.2 |
Marital status of mother | ||
married | 376,222 (77.0) | 10.1 |
single | 112,696 (23.0) | 23.9 |
Time between births | ||
12 months or less | 19,987 (4.1) | 16.0 |
>12 months | 468,931 (95.9) | 13.2 |
Maternal Age | ||
17 years or less | 21,362 (4.4) | 17.1 |
18 to 34 years | 407,801 (83.4) | 13.7 |
35 years or more | 59,755 (12.2) | 8.9 |
Maternal Ethnicity | ||
caucasian | 351,051 (71.8) | 14.3 |
hispanic | 97,911 (20.0) | 10.4 |
black | 21,989 (4.5) | 14.4 |
other/missing | 17,967 (3.7) | 8.5 |
Maternal Educational level | ||
<high school | 85,284 (17.4) | 23.9 |
high school | 157,852 (32.3) | 17.9 |
some college | 111,824 (22.9) | 10.5 |
college | 112,384 (23.0) | 3.0 |
more than college | 13,840 (2.8) | 1.7 |
missing | 7734 (1.6) | 12.5 |
Maternal Alcohol use | ||
none | 477,733 (97.7) | 12.6 |
1 to 50 drinks/week | 11,185 (2.3) | 42.8 |