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Table 3 Risk factors for hospitalization at 18-month longitudinal follow-up
| Risk factor | Adjusted for all variables shown (OR [95% CI]) | Adjusted for all variables, except asthma severity and health status (OR [95% CI]) |
|---|---|---|
| Demographic characteristics and smoking | ||
| Age (per 10 years) | 1.2 (0.7–2.4) | 1.2 (0.7–2.1) |
| Female gender | 1.5 (0.5–4.6) | 1.2 (0.5–2.8) |
| Non-white race (non-Hispanic) | 3.1 (1.1–8.8) | 1.9 (0.9–4.3) |
| Education (years) | 0.8 (0.6–1.1) | 0.9 (0.7–1.1) |
| Household income (per $10,000 decrement) | 1.1 (0.9–1.3) | 1.2 (1.02–1.4) |
| Current cigarette smoking | 1.4 (0.2–7.9) | 1.2 (0.3–4.6) |
| Past cigarette smoking | 0.7 (0.2–2.0) | 1.4 (0.6–3.3) |
| Asthma severity | ||
| Severity-of-asthma score (per 5 points) | 3.4 (1.7–6.8) | N/A |
| Recent hospitalizations for asthma | 8.3 (2.1–33.4) | N/A |
| Remote hospitalizations for asthma | 2.7 (0.6–11.5) | N/A |
| Other asthma clinical factors | ||
| Atopic history | 0.7 (0.2–2.3) | 0.5 (0.2–1.4) |
| Aspirin allergy history | 0.7 (0.2–2.3) | 1.7 (0.6–4.6) |
| Gastric acid suppression medication (in prior 12 months) | 0.7 (0.2–2.0) | 2.2 (1.0–4.9) |
| Health status | ||
| SF-36 Physical component score | 0.98 (0.94–1.03) | N/A |
| SF-36 Mental component score | 0.97 (0.92–1.02) | N/A |
| Health care access | ||
| Reliance on ED for urgent care | 3.2 (1.0–9.8) | 2.3 (1.0–5.7) |
