Odds ratios (95% CI) for risks factors for hospital admission using constructed variable* (mutually exclusive catergories), univariate and multivariate (adjusted for use of ICS and duration of asthma)
| Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|
| OR (95% CI) | p value | OR (95% CI) | p value | |
| ICS, inhaled corticosteroids. | ||||
| *Overall p value for the constructed variable is p<0.001. The reference category for the constructed variable is neither sensitised nor virus infected (± exposed). | ||||
| †Median (range) in years; OR refers to decreased risk with each additional year. | ||||
| Sensitised only | 1.8 (0.4 to 9.2) | 0.47 | 1.75 (0.3 to 11.7) | 0.56 |
| Virus only | 3.8 (0.7 to 20.3) | 0.11 | 3.2 (0.5 to 19.1) | 0.20 |
| Sensitised and exposed only | 3.1 (0.97 to 9.7) | 0.06 | 2.6 (0.7 to 9.3) | 0.13 |
| Sensitised and virus only | 12.3 (0.7 to 213.4) | 0.09 | 8.9 (0.3 to 254.2) | 0.20 |
| Sensitised and exposed and virus detected | 22.7 (4.6 to 112.5) | <0.001 | 19.4 (3.7 to 101.5) | <0.001 |
| On regular ICS | 0.2 (0.1 to 0.6) | 0.002 | 0.3 (0.08 to 0.9) | 0.03 |
| Duration of asthma† | 0.8 (0.7–0.9) | 0.004 | 0.9 (0.8–1.1) | 0.3 |