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Table 1 Baseline characteristics of suspected pneumonia cases and their non-diseased subjects

From: The impact of community-acquired pneumonia on the health-related quality-of-life in elderly

  Suspected pneumonia cases (i.e. “diseased” cohortb) Non-diseased subjects p-value
Episodes/subjects 562 1123  
Matching criteria
 Male, in % 71.0 71.1 ns
 Age at inclusiona, median (IQR) 76 (72–82) 76 (72–81) ns
 EQ5D-index (at vaccination), median (IQR) 0.89 (0.78–1.00) 0.89 (0.78–1.00) ns
Other characteristics
 Number of self-reported comorbidities at inclusiona, median (IQR) 2 (1–4) 2 (1–3) <0.001
 Educational level, in %    <0.001
  Low 53.6 36.3  
  Medium 28.3 36.4
  High 17.4 27.0
  Missing 0.7 0.3
 Region, in %    <0.001
  North 3.4 4.0  
  East 27.4 18.4
  West 32.2 24.1
  South 37.0 53.4
 Living situation at vaccination, in %    ns
  Single household 27.6 26.8  
  Two or more person/household 71.5 72.8
  Elderly home 0.7 0.4
  Missing 0.2 0.1
 Vaccinated, in % 48.4 51.6 ns
  1. Abbreviations: SD, Standard deviation, ns not significant
  2. aAt inclusion in cohort (= day of home visit). bComposed of radiologically confirmed CAP cases (i.e. having a positive X-rays and at least 2 clinical criteria) and radiologically non-confirmed CAP cases