Table 2.
Asthma morbidity and healthcare utilization by specific and total IgE levels.
| Days of wheeze in past 14 days |
Percent missed school days in last 3 months |
Any Unscheduled asthma visits in year (%) |
Any Hospitalizations in year (%) |
Any steroid use in 3 months prior to baseline (%) |
|||
|---|---|---|---|---|---|---|---|
| N | Mean (SE) days |
N | Mean (SE) days |
||||
| Total IgE | |||||||
| < 100 kU/L | 153 | 3.38 (0.22) | 144 | 5.48 (0.51) | 42.5 | 4.6 | 16.4 |
| ≥ 100 kU/L | 318 | 3.46 (0.16) | 305 | 5.74 (0.35) | 48.7 | 15.7 | 36.2 |
| p-value | 0.77 | 0.67 | |||||
| RR (95% CI) | 1.15 (0.92–1.42) | 3.43 (1.60–7.40) | 2.21 (1.52–3.21) | ||||
| Cockroach (B.germanica) SIgE |
|||||||
| < 0.35 kU/L | 260 | 3.45 (0.17) | 246 | 5.65 (0.39) | 43.1 | 8.5 | 23.4 |
| ≥ 0.35 kU/L | 211 | 3.42 (0.19) | 203 | 5.67 (0.43) | 51.2 | 16.6 | 37.5 |
| p-value | 0.92 | 0.99 | |||||
| RR (95% CI) | 1.19 (0.98–1.44) | 1.96 (1.19–3.24) | 1.60 (1.22–2.10) | ||||
| Dust mite (D.farinae) SIgE |
|||||||
| < 0.35 kU/L | 312 | 3.34 (0.16) | 293 | 5.72 (0.36) | 43.3 | 8.6 | 24.7 |
| ≥ 0.35 kU/L | 159 | 3.63 (0.22) | 156 | 5.54 (0.49) | 53.5 | 18.9 | 39.4 |
| p-value | 0.28 | 0.76 | |||||
| RR (95% CI) | 1.24 (1.02–1.50) | 2.18 (1.34–3.54) | 1.60 (1.22–2.08) | ||||
| Alternaria SIgE | |||||||
| < 0.35 kU/L | 304 | 3.45 (0.16) | 284 | 6.01 (0.36) | 46.0 | 9.2 | 28.0 |
| ≥ 0.35 kU/L | 167 | 3.41 (0.22) | 165 | 5.06 (0.47) | 47.9 | 17.4 | 32.9 |
| p-value | 0.88 | 0.11 | |||||
| RR (95% CI) | 1.04 (0.85–1.27) | 1.89 (1.16–3.06) | 1.18 (0.90–1.55) | ||||