Table 2.
Multivariate logistic regression results of the risk factors of severe or very severe illness of all-cause and RSV-associated ALRI hospitalizations.
| Odds Ratio for All-Cause ALRI | Odds Ratio for RSV-Associated ALRI | |||
|---|---|---|---|---|
| Variables | Estimate | 95% CI | Estimate | 95% CI |
| Male | 0.94 | 0.57–1.55 | 0.71 | 0.28–1.81 |
| Age | ||||
| 0–<6 m | 1 | Reference | 1 | Reference |
| 6–<12 m | 1.40 | 0.70–2.67 | 2.38 | 0.61–7.75 |
| 12–<24 m | 1.70 | 0.92–3.04 | 0.90 | 0.05–5.32 |
| Preterm (<37 wGA) | 0.46 | 0.21–1.07 | 1.08 | 0.25–5.95 |
| Low birth weight (<2500 g) | 0.69 | 0.26–1.73 | 2.04 | 0.38–9.52 |
| Any comorbidities | 5.02 | 2.56–9.60 | 0.58 | 0.03–3.58 |
| Admitted during the COVID-19 pandemic | 1.92 | 1.17–3.15 | 5.03 | 2.01–13.89 |
Note: ALRI, acute lower respiratory infection; RSV, respiratory syncytial virus; CI, confidence interval; m, months; w, week; GA, gestational age. Increased severity is defined as any severe or very severe ALRI.