Table 1

Baseline characteristics of lower respiratory tract infection episodes in patients ≥80 years (n = 509).

Number of episodes860
Sex, %
Mean age, years (range)85.2 (80–104)
Diagnosis, %
 Acute bronchitis35.8
 Exacerbation of COPD39.9
 30-day hospitalisation or death12.7
Comorbidity, %
 Overall (for example, ≥1 illnesses)91.9
 Heart failure33.4
 Neurological diseaseb25.1
  • a Insulin-dependent diabetes mellitus + non-insulin-dependent diabetes mellitus.

  • b Stroke, transient ischaemic attack, dementia, and neurological disease in general. COPD = chronic obstructive pulmonary disease.