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Table 5 Two multivariable logistic regression sensitivity analyses with: 1) Outbreaks excluded; 2) All Legionella cases excluded; 3) Only two studies that used PCR methods

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

  1) Outbreaks excluded 2) Legionella cases excluded 3) PCR based studies
  OR 95 % CI OR 95 % CI OR 95 % CI
Non-respiratory season 4.2 2.38–7.30** 5.4 3.02–9.64** 8.3 4.35–15.80**
Age <60 years 4.2 2.38–7.30** 6.1 3.24–11.55** 3.7 1.93–7.06**
Male gender 1.8 1.02–3.05* 1.7 0.94–3.00 1.4 0.74–2.68
COPDa 0.2 0.08–0.54* 0.1 0.04–0.51* 0.2 0.07–0.71*
  1. Abbreviations: OR odds ratio, CI confidence interval, COPD chronic obstructive pulmonary disease
  2. *Indicates a p-value <0.05; **Indicates a p-value < 0.001
  3. aIndicates four missing values