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Table 2 Characteristics of the study population

From: The health status of Q-fever patients after long-term follow-up

Characteristics Q-fever COPD- Healthy Total
  Age <50 >50 yrs      
  N = 238 (%) N = 277 (%) N = 128 (%) N = 65 (%) N = 708
Gender          
   Male 140 (58.8) 166 (59.9) 86 (67.2) 47 (72.3) 439
   Female 98 (41.2) 111 (40.1) 42 (32.8) 18 (27.7) 269
Age          
   Mean 40.4   60.3   62.5   63.5   56.7
   SD 7.4   7.6   6.9   6.6   
Current smoking          
   Yes 96 (40.3) 71 (26.6) 11 (8.9) 11 (16.9) 189
   No 137 (57.6) 196 (73.4) 113 (91.1) 54 (83.1) 500
Education-level          
   Low 56 (23.5) 97 (35.5) 62 (50.4) 20 (30.8) 235
   Average 120 (50.4) 126 (46.2) 38 (30.9) 26 (40.0) 310
   High 60 (25.2) 50 (18.3) 23 (18.7) 19 (29.2) 152
  1. Q-fever patients younger and older than 50 years, Norm groups Chronic Obstructive Pulmonary Disease- and healthy individuals. Q-fever patients >50 currently smoke significantly more than COPD-controls. None of the other characteristics differ significantly (logistic regression).