Table 1.
Demographic characteristics of the study population, CHAMACOS Study, Salinas, CA
| Characteristics at time of pregnancy | N | (%) |
|---|---|---|
| Maternal age | ||
| 18–24 | 174 | (44.7) |
| 25–29 | 123 | (31.6) |
| 30–34 | 62 | (15.9) |
| 35+ | 30 | (7.7) |
| Household income as a proportion of poverty | ||
| <100% | 240 | (61.2) |
| >100% | 152 | (38.8) |
| Maternal education | ||
| 6th grade or less | 174 | (44.7) |
| 7th-12th grade | 136 | (35.0) |
| High school graduate or greater | 79 | (20.3) |
| Maternal country of birth | ||
| United States | 48 | (12.3) |
| Mexico | 334 | (85.9) |
| Other | 7 | (1.8) |
| Years mother has lived in the United States | ||
| Five or fewer | 195 | (50.1) |
| Six to ten | 96 | (24.7) |
| Eleven or more | 101 | (26.0) |
| Parity | ||
| First child | 126 | (32.4) |
| Second child | 117 | (30.1) |
| Third child or greater | 146 | (37.5) |
| Child’s mother, father, or siblings have asthma history | ||
| No | 354 | (90.3) |
| Yes | 38 | (9.7) |
| Housing density (number of people per number of rooms) | ||
| <=0.5 | 6 | (1.6) |
| 0.51–1.00 | 86 | (23.6) |
| 1.01–1.50 | 138 | (37.8) |
| >=1.51 | 135 | (37.0) |
| Furry pets in home during pregnancy | ||
| Yes | 9 | (2.3) |
| No | 379 | (97.7) |
| Smoked at all during pregnancy | ||
| Yes | 15 | (3.8) |
| No | 377 | (96.2) |
| Number of hours per day around a smoker during pregnancy | ||
| 0 | 343 | (88.6) |
| 0.5 | 32 | (8.3) |
| 1–2 | 6 | (1.6) |
| 3+ | 6 | (1.6) |
| Season of birth | ||
| Winter | 111 | (28.4) |
| Spring | 104 | (26.6) |
| Summer | 84 | (21.5) |
| Fall | 92 | (23.5) |