Comparison of influenza vaccination status of inpatients and outpatients with asthma and confirmed influenza
| Influenza vaccination status | No. (%) of inpatients with confirmed influenza n = 245 | No. (%) of outpatients with confirmed influenza n = 176 | Crude OR (95% CI) | Adjusted OR (95% CI) * |
|---|---|---|---|---|
| Current-season vaccination | 136 (55.5) | 43 (24.4) | 5.50 (3.50 to 8.69) | 1.05 (0.51 to 2.18) |
| Vaccination in previous seasons only | 40 (16.3) | 13 (7.4) | 5.35 (2.68 to 10.69) | 2.11 (0.88 to 5.07) |
| Never vaccinated | 69 (28.2) | 120 (68.2) | Ref. | Ref. |
Note: CI = confidence interval, OR = odds ratio, Ref. = reference category. Current-season vaccination = vaccinated in the current season regardless of previous doses.
↵* We adjusted ORs for sex, age groups (9–64, 65–84 and ≥ 85 yr), other major chronic conditions, hospital admissions within the previous 12 months, pneumococcal vaccination, and month and season of sample collection.