Table 3.

Univariate Analysis of Demographic and Exposure Categories Comparing Influenza-like Illness (ILI) Cases to Those without Symptoms of ILI

	Weighted Univariate Analysis
	RR (95% CI)		P value
Age group			0.06
<5 years	4.1	(0.9-19)
5-14 years	5.2	(0.9-31)
15-24 years	0.7	(0.1-4.5)
25-49 years	2.1	(0.5-8.6)
≥ 50 years	1.0	(referent)
Multifamily or apartment dwelling	5.0	(1.2-21)	0.01
Immunosuppressive condition	5.0	(1.3-19)	0.02
Attend or work at a school			0.02
Primary schoola	3.3	(1.2-8.9)
High school or college	0.7	(0.2-2.3)
None	1.0	(referent)

NOTE. RR, relative risk; CI, confidence interval.

^aDaycare, preschool, or elementary school.