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Table 2 Demographic characteristics and outcome of 980 patients hospitalised with community-acquired pneumonia

From: Atypical aetiology in patients hospitalised with community-acquired pneumonia is associated with age, gender and season; a data-analysis on four Dutch cohorts

  Total
(n = 980)
Atypical
(n = 117)
Other pathogen
(n = 448)
Unknown
(n = 415)
Male gender (%) 561 (57.2) 77 (65.8) 250 (55.8) 234 (56.4)
Age in years (IQR) 67 (52–78) 52 (41.5–67) 68 (54–78) 69 (55–80)*
COPD (%)a 236 (24.1) 9 (7.7) 135 (30.3) 92 (22.3)*
Smoking (%)b 211 (28.6) 38 (40.4) 93 (29.3) 80 (24.5)*
Nursing home resident (%)c 29 (3.0) 0 (0.0) 8 (1.8) 21 (5.1)*
PSI class IV or V (%) 435 (44.4) 38 (32.5) 219 (48.9) 178 (42.9)*
30-Day mortality (%) 67 (6.8) 6 (5.1) 33 (7.4) 28 (6.7)
  1. Results are given as number (percentage) or median (interquartile range)
  2. Abbreviations: COPD chronic obstructive pulmonary disease, ICU intensive care unit, IQR interquartile range, PSI pneumonia severity index
  3. *Indicates a significant difference between the three groups (p-value <0.05). aIndicates four missing values, bIndicates 243 missing values, cIndicates 10 missing values