Table 2

Incidence of CAP and the impact of exposure to passive smoking at home

Never smokersAnnual incidence of CAPRelative risk
(95% CI)
Attributable risk
(95% CI)
Aetiological fraction, %
Overall study population
 Passive smokers1.14/103 inhabitants1.26 (1.02 to 1.55)0.235/103 inhabitants
(0.234 to 0.235)
20.6
 Non-passive smokers0.90/103 inhabitants
Participants aged <65 years
 Passive smokers0.75/103 inhabitants1.14 (0.87 to 1.51)0.094/103 inhabitants
(0.094 to 0.095)
12.5
 Non-passive smokers0.66/103 inhabitants
Participants aged ≥65 years
 Passive smokers2.50/103 inhabitants1.48 (1.08 to 2.03)0.811/103 inhabitants
(0.810 to 0.812)
32.5
 Non-passive smokers1.69/103 inhabitants
  • CAP, community-acquired pneumonia.