Table 1.
Demographic and clinical characteristics of the study population (n=1,951).
| N or median
|
% or (IQR)
|
|
|---|---|---|
| Study Visit | ||
| Baseline | 1,951 | 100.0 |
| Year 1 | 1,761 | 90.3 |
| Year 2 | 1,673 | 85.8 |
| Year 3 | 1,340 | 68.7 |
| Gender | ||
| Female | 931 | 47.7 |
| Male | 1,020 | 52.3 |
| Ethnicity | ||
| Hispanic or Latino | 167 | 8.6 |
| Not Hispanic or Latino | 1,779 | 91.4 |
| Race | ||
| Caucasian | 1,376 | 71.9 |
| African American | 360 | 18.8 |
| Asian | 26 | 1.4 |
| Other | 153 | 8.0 |
| Gestational age at birth (weeks) | 39.0 | 38.6–40.0 |
| Weight at birth (grams) | 3,405.0 | 3,120.0–3,740.0 |
| Type of delivery | ||
| Vaginal | 1,337 | 68.5 |
| Cesarean | 614 | 31.5 |
| Mother diagnosed with asthma | ||
| Yes | 380 | 19.5 |
| No | 1,570 | 80.5 |
| Maternal smoking | ||
| Current smoker | 373 | 19.1 |
| Past smoker | 301 | 15.4 |
| Never smoked | 1,275 | 65.4 |
| Other household smokers | ||
| Yes | 610 | 31.3 |
| No | 1,341 | 68.7 |
| Primary insurance enrollment | ||
| Medicaid/ TennCare | 1,059 | 54.3 |
| Private | 868 | 44.5 |
| Self-pay | 12 | 0.6 |
| Other | 10 | 0.5 |
| Attended group daycare in first year of life | ||
| Yes | 782 | 40.1 |
| No | 1,169 | 59.9 |
IQR= Interquartile range (Q1 (25%)- Q3 (75%))