Table 1.
Demographic Characteristics of the Study Population, CHAMACOS Study, Salinas Valley, California, 1999–2000 (n = 286)
| Characteristics | No. | % |
| Maternal age, years | ||
| <20 | 29 | 10 |
| 20–24 | 110 | 39 |
| 25–29 | 95 | 33 |
| 30–34 | 37 | 13 |
| ≥35 | 15 | 5 |
| Parity | ||
| 0 | 92 | 32 |
| ≥1 | 194 | 68 |
| Race/ethnicity | ||
| Non-Hispanic white | 7 | 3 |
| Hispanic | 273 | 95 |
| Other | 6 | 2 |
| Marital status | ||
| Married or living as married | 226 | 79 |
| Unmarried | 60 | 21 |
| Maternal education | ||
| Sixth grade or less | 112 | 39 |
| Some middle/high school | 104 | 36 |
| High school graduate | 70 | 25 |
| Family income | ||
| Below federal poverty threshold | 176 | 62 |
| At federal poverty threshold or above | 110 | 38 |
| Country of birth | ||
| Mexico | 241 | 84 |
| United States | 39 | 14 |
| Other | 6 | 2 |
| Years of residence in the United States | ||
| ≤5 years | 161 | 56 |
| 6–10 years | 56 | 20 |
| ≥11 years | 37 | 13 |
| Entire life | 32 | 11 |
| Body mass index, kg/m2 | ||
| Underweight (<18.5) | 2 | 1 |
| Normal (18.5–24.9) | 110 | 40 |
| Overweight (25–29.9) | 110 | 40 |
| Obese (≥30) | 55 | 20 |
| Smoked during pregnancy | ||
| Yes | 17 | 6 |
| No | 269 | 94 |
| Low birth weight infant | ||
| Yes | 9 | 3 |
| No | 277 | 97 |
| Preterm infant | ||
| Yes | 17 | 6 |
| No | 269 | 94 |
Abbreviation: CHAMACOS, Center for the Heath Assessment of Mothers and Children of Salinas.