TABLE 5

Adjusted RR of Severe LRTI Hospitalizations Versus Nonsevere LRTI Hospitalizations Among Children 0 to 18 Years of Age in Commercial and Medicaid Databases

VariableCommercialMedicaid
Adjusted RR95% CIAdjusted RR95% CI
Year of hospitalization
 20071.040.99–1.090.930.88–0.98
 20080.950.91–1.001.000.95–1.05
 2009ReferenceReference
 20101.071.03–1.121.020.98–1.07
 20111.111.07–1.151.131.07–1.18
Age group, y
 0–11.251.20–1.300.880.83–0.93
 2–40.830.67–0.740.640.59–0.68
 5–90.710.67–0.740.760.71–0.82
 10–18ReferenceReference
Gender
 BoyReferenceReference
 Girl1.020.99–1.051.061.01–1.07
No. underlying medical conditions
 0ReferenceReference
 12.682.58–2.782.752.61–2.90
 24.013.87–4.213.763.55–3.98
 ≥34.854.65–5.075.565.28–5.85
Race
 WhiteNAReference
 African AmericanNA1.051.01–1.30
 HispanicNA1.241.16–1.31
 OtherNA1.161.11–1.21
  • CI, confidence interval; NA, not applicable; RR, relative risk.