Table 3.

Predictors of Influenza Complications and Hospitalziations

	Presence During Interval of Care
	Hospitalization (N = 103)		Any Complication (N = 1,545)
	OR*	95% Cl	OR*	95% Cl
Sex (Female vs. Male)	1.02	0.67–1.56	1.00	0.89–1.12
Age
<5	0.75	0.33–1.70	1.55	1.26–1.91
5–14	0.45	0.19–1.10	1.08	0.89–1.32
15–24	0.28	0.06–1.26	1.02	0.79–1.31
25–34	0.83	0.33–2.07	0.99	0.78–1.26
35–44	1.00	n/a	1.00
45–54	1.22	0.59–2.52	0.85	0.67–1.08
55–64	1.75	0.87–3.52	1.04	0.80–1.35
65+	1.93	0.82–4.56	1.54	1.06–2.24
Prior/Concurrent
Prior Immunization	2.17	1.06–4.43	1.01	0.70–1.45
Recent Comp/Comorbidity	3.17	1.96–5.13	1.47	1.27–1.70
Concurrent Amant/ Rimant	0.60	0.18–2.00	1.22	0.91–1.63
Prior Influenza Episode	0.32	0.09–1.07	0.85	0.66–1.09
Quintile of 3-Month Preceding Health Care Cost
1:$0	1.00		1.00
2: >$0–$86	0.38	0.22–1.22	0.92	0.75–1.12
3:$87–$199	0.44	0.15–1.24	0.86	0.70–1.04
4: $200–452	0.84	0.36–1.97	1.21	1.00–1.47
5:$453+	1.71	0.77–3.84	1.56	1.28–1.91
Medication Use and Prevalent Comorbid Conditions
Chronic Corticosteroid Use	2.00	0.66–6.02	1.84	0.83–4.07
Malignancy	3.67	1.82–7.44	2.38	1.44–3.93
Chronic Heart Disease	3.16	1.66–6.00	1.76	1.19–2.61
Chronic Lung Disease	1.29	0.81–2.05	1.15	1.00–1.34
Diabetes	2.19	1.08–4.47	1.74	1.16–2.61

^* Adjusted using logistic regression.