Table 1.
Characteristics of the study population with and without snoring data at 1.5, 4.75, and 6.75 years
| Covariates | 1.5 years |
4.75 years |
6.75 years |
|||
|---|---|---|---|---|---|---|
| With Data N = 10,653 | Missing N = 3,396 | With Data N = 9,007 | Missing N = 5,042 | With Data N = 7,895 | Missing N = 6,154 | |
| Wheezed, ever† | 34.58% | 60.75%* | 49.24% | 83.63%* | 53.39% | 87.89%* |
| LBW (< 2500 g) | 4.99% | 7.93%* | 4.60% | 7.66%* | 4.48% | 7.27%* |
| Preterm (< 37 weeks) | 5.80% | 7.86%* | 5.33% | 8.03%* | 5.32% | 7.56% |
| Housing, inadequate | 9.34% | 8.11%* | 12.53% | 12.25% | 11.80% | 13.52% |
| Girl | 48.47% | 46.67% | 47.97% | 48.81% | 48.45% | 48.05% |
| White‡ | 97.85% | 95.21%* | 98.11% | 95.67%* | 98.14% | 96.14%* |
| Smoked, ever | 48.66% | 58.63%* | 47.77% | 56.83%* | 47.29% | 55.75%* |
| Other child, ≥ 1 | 54.82% | 57.75%* | 54.10% | 57.76%* | 53.70% | 57.61%* |
| Breastfed, never | 23.32% | 34.71%* | 22.32% | 31.94%* | 21.39% | 31.41%* |
| Paternal employment, manual | 35.12% | 54.41%* | 41.37% | 50.97%* | 40.53% | 50.43%* |
| Maternal education, lower | 62.29% | 75.54%* | 60.83% | 73.55%* | 59.47% | 72.98%* |
*
Significant at P < 0.05. P values are from χ2 test.
†
Based upon report of ever wheezing, prior 12 months.
‡
Participants reporting a race other than white are, in descending order: Black Caribbean (n = 75), Indian (n = 53), Other Black (n = 44), Chinese (n = 8), Pakistani (n = 22), Black African (n = 11), and Bangladeshi (n = 7).