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From:

Table 4

Risk of severe outcome among inpatients with pandemic (H1N1) influenza who had no underlying medical condition,* by age

Age, yrNo. (% ) with nonsevere outcomeNo. (%) with severe outcomeRisk of severe outcome, OR (95% CI)
< 181/92 (88.0)7/11 (63.6)0.6 (0.2–1.6)
1–4104/149 (69.8)8/14 (57.1)0.5 (0.2–1.4)
5–984/148 (56.8)7/15 (46.7)0.6 (0.2–1.6)
10–1985/151 (56.3)12/25 (48.0)Reference
20–2968/126 (54.0)14/41 (34.1)1.5 (0.6–3.4)
30–3941/91 (45.1)20/38 (52.6)3.5 (1.5–7.7)
40–4936/109 (33.0)13/51 (25.5)2.6 (1.1–6.1)
50–5932/106 (30.2)10/48 (20.8)2.2 (0.9–5.6)
≥ 6022/102 (21.6)10/48 (20.8)3.2 (1.2–8.4)
All553/1074 (51.5)101/291 (34.7)
*Underlying condition includes lung disease, asthma, diabetes and other metabolic disorders, pre-existing heart disease, renal disease, immunosuppression, anemia, liver disease, neurological disorder, or other chronic medical condition predisposing to complications of influenza.3,4 Pregnant women were also removed from this analysis.
Admission to ICU or death.