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Table 2 Incidence Rates (IR) of community-acquired pneumonia (CAP), by age group and sex, during the study period.

From: The burden of community-acquired pneumonia in the elderly: the Spanish EVAN-65 Study

Sex Male Female  
Age group No. CAP IRa(95% CI)b No. CAP IRa(95% CI)b P-valuec
65–74 yrs      
   Hospitalised CAP 100 11.09 (9.04–13.47) 45 4.26 (3.11–5.69) 0.000
   Outpatient CAP 27 2.99 (1.98–4.35) 23 2.18 (1.38–3.26) 0.257
   All CAP 127 14.09 (11.76–16.73) 68 6.43 (5.00–8.14) 0.000
75–84 yrs      0.000
   Hospitalised 90 19.85 (16.00–24.34) 60 8.71 (6.66–11.19) 0.030
   Outpatient 24 5.29 (3.40–7.86) 19 2.76 (1.56–4.30) 0.000
   All CAP 114 25.15 (20.80–30.13) 79 11.47 (9.10–14.27)  
85 yrs or more      
   Hospitalised 29 28.97 (19.50–41.32) 31 16.36 (11.15–23.13) 0.234
   Outpatient 10 9.99 (4.80–18.30) 15 7.92 (4.44–13.02) 0.575
   All CAP 39 38.96 (27.86–52.85) 46 24.27 (17.83–32.23) 0.026
Overall age groups      
   Hospitalised 219 15.05 (13.14–17.16) 136 7.03 (5.90–8.30) 0.000
   Outpatient 61 4.19 (3.21–5.38) 57 2.94 (2.23–3.81) 0.054
   All CAP 280 19.24 (17.08–21.60) 193 9.97 (8.62–11.47) 0.000
  1. aIncidence Rates are estimated for 1,000 person-year.
  2. bCI denotes confidence interval
  3. cP-values were calculated using Chi-squared test.