TABLE 1 

Annual hospitalization rates per 100,000 in the pre-PCV7 period in the 10 study states at baselinea and in the 2005–2006 season

Age (yr)Rate of IPD casesRR (95% CI)Rate of pneumococcal (lobar) pneumonia cases (ICD9 481)RR (95% CI)Rate of nonbacteremic pneumococcal pneumonia cases (ICD9 481 with no IPD codeRR (95% CI)Rate of all-cause pneumonia casesRR (95% CI)
Baseline2005–2006Baseline2005–2006Baseline2005–2006Baseline2005–2006
0-127.85.50.20 (0.16–0.24)25.913.40.49 (0.43–0.58)22.112.40.53 (0.46–0.62)1,026.5753.70.72 (0.70–0.73)
2–45.42.00.35 (0.27–0.47)11.89.10.83 (0.72–0.96)10.58.50.88 (0.76–1.02)307.5303.40.99 (0.96–1.01)
5–171.40.70.47 (0.36–0.60)4.92.60.52 (0.46–0.59)4.42.40.54 (0.47–0.62)76.167.00.87 (0.85–0.90)
18–393.51.40.38 (0.34–0.43)11.64.30.37 (0.35–0.40)9.43.50.39 (0.36–0.42)88.562.60.68 (0.67–0.70)
40–648.96.00.64 (0.60–0.68)30.216.60.56 (0.54–0.58)24.813.60.56 (0.54–0.58)250.9234.60.92 (0.91–0.93)
≥6530.617.10.53 (0.50–0.56)144.964.70.46 (0.44–0.47)126.155.90.46 (0.44–0.47)1,875. 21672. 60.88 (0.87–0.89)
  • a 1996–1997 through 1998–1999 seasons.