Table 1.
Descriptive statistics for the population of 13,114 children 6–9 years of age with asthma from the Tennessee Asthma and Bronchiolitis Study cohort between 2005 and 2010
| Characteristic (N with variable) | n | Percent |
|---|---|---|
| Marital status (13,113) | ||
| Single | 8,198 | 63% |
| Married | 4,915 | 37% |
| Maternal age (13,084) | 22 (19–26) | |
| Maternal education (13,093) | ||
| Less than high school | 5,343 | 41% |
| High school | 6,184 | 47% |
| More than high school | 1,566 | 12% |
| Maternal smoking (13,093) | ||
| Smoking | 4,016 | 31% |
| Nonsmoking | 9,077 | 69% |
| Maternal asthma (7,935) | ||
| Asthma | 538 | 7% |
| No asthma | 7,397 | 93% |
| Maternal race (12,937) | ||
| White | 8,238 | 64% |
| Black | 4,354 | 34% |
| Hispanic | 345 | 3% |
| Infant race (12,182) | ||
| White | 7,545 | 62% |
| Black | 4,260 | 35% |
| Hispanic | 377 | 3% |
| Gestational age, d (13,114) | 274 (265–281) | |
| Birth weight, g (13,114) | 3,175 (2,778–3,515) |
* Percentages are given for categorical variables, and medians with interquartile ranges are given for continuous variables.