Table 5.
Factors associated with hospitalization and radiologically confirmed pneumonia
| Hospitalization | Pneumonia | |||||||
|---|---|---|---|---|---|---|---|---|
| Univariate analysis | Multivariable analysis | Univariate analysis | Multivariable analysis | |||||
| OR (95% CI) | P | OR (95% CI) | P | OR (95% CI) | P | OR (95% CI) | P | |
| Age‐group* | 0·010 | 0·041 | 0·078 | 0·086 | ||||
| 0–4 years | 5·6 (1·8–17·2) | 0·003 | 4·9 (1·4–17·1) | 0·012 | 0·8 (0·1–9·2) | 0·852 | 0·5 (0·04–6·7) | 0·626 |
| 5–9 years | 2·2 (0·9–5·6) | 0·095 | 2·2 (0·7–6·2) | 0·155 | 4·8 (0·9–24·6) | 0·063 | 4·4 (0·8–25·4) | 0·099 |
| ≥10 years | Reference | – | Reference | – | Reference | – | Reference | – |
| ANC <500/mm3 at pH1N1 diagnosis | 7·9 (2·5–25·7) | <0·001 | 8·1 (2·4–27·1) | 0·001 | 7·9 (1·9–33·4) | 0·005 | 9·2 (2·0–42·1) | 0·004 |
| ANC <500/mm3 during illness course | 6·8 (2·4–18·9) | <0·001 | 7·0 (2·4–20·4) | <0·001 | 5·9 (1·4–24·8) | 0·015 | 6·4 (1·4–28·2) | 0·015 |
| ALC <500/mm3 during illness course | 1·5 (0·6–3·5) | 0·401 | – | – | 1·6 (0·4–6·2) | 0·495 | – | – |
ORs generated by logistic regression.
ANC, absolutely neutrophil count; ALC, absolute lymphocyte count; CI, confidence interval; OR, odds ratio.
*ORs and P values displayed in multivariable models are those generated with inclusion of ANC <500/mm3 at pH1N1 diagnosis as a predictor variable. Bold values in tables indicate P‐values lower than the significance level α = 0.05