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. Author manuscript; available in PMC: 2015 Dec 5.
Published in final edited form as: Vaccine. 2014 Oct 30;32(51):6948–6955. doi: 10.1016/j.vaccine.2014.10.060

Table 3A.

Cox regression analyses for predictors for AOM, OM by age 6 months

Risk factor AOM Risk Ratio
N = 152		 OM Risk Ratio
N = 140
Vaccine group (infants born to maternal vaccine group) 3.9 (95% CI 1.7, 9.1)
p <0.01		 3.4 (95% CI 1.6, 7.4)
p <0.01
URI 9.2 (95% CI 2.8, 30.5)
p <0.001		 6.6 (95% CI 2.5, 17.0)
p <0.001
Clinic visits in 6 months 1.3/visit (95% CI 1.1, 1.5)
p < 0.01		 1.2/visit (95% CI 1.0, 1.4)
p = 0.02
Sibling history of tubes Not significant in the final model (p >0.05) 2.8 (1.0, 7.5)
p = 0.04