Table 1.
Demographic characteristics of the study population, CHAMACOS Study, Salinas, CA
| Characteristics at time of pregnancy | N (%) |
|
|---|---|---|
| Included in BKMR | Excluded from BKMR | |
| Age | ||
| 18–24 | 135 (42) | 124 (58) |
| 25–29 | 106 (33) | 52 (25) |
| 30–34 | 51 (16) | 27 (13) |
| 35+ | 27 (8) | 9 (4) |
| Household income as a proportion of poverty | ||
| <100% | 198 (62) | 131 (62) |
| 100–200% | 109 (34) | 74 (35) |
| >200% | 12 (4) | 7 (3) |
| Maternal education | ||
| 6th grade or less | 141 (44) | 90 (42) |
| 7th-12th grade | 107 (34) | 85 (40) |
| High school graduate or greater | 71 (22) | 37 (17) |
| Maternal country of birth | ||
| United States | 41 (13) | 30 (14) |
| Mexico | 275 (86) | 173 (82) |
| Other | 3 (1) | 9 (4) |
| Years mother has lived in the United States | ||
| Five or fewer | 148 (46) | 123 (58) |
| Six to ten | 85 (27) | 31 (15) |
| Eleven or more | 86 (27) | 58 (27) |
| Parity | ||
| First child | 102 (32) | 79 (37) |
| Second child | 92 (29) | 71 (33) |
| Third child or greater | 125 (39) | 62 (29) |
| Child’s mother, father, or siblings have asthma history | ||
| No | 288 (90) | 189 (89) |
| Yes | 31 (10) | 23 (11) |