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Table 1 Description of the study population

From: Prevalence of latent tuberculosis infection among health care workers in a hospital for pulmonary diseases

Variable N %
Gender   
   Female 196 74
   Male 69 26
Age*   
   < 30 years 115 43.4
   30 – < 40 years 41 15.5
   40 – < 50 years 68 25.7
   50 – 67 years 41 15.5
Country of birth   
   Germany 214 80.8
   foreign country 51 19.2
BCG-vaccination   
   No 125 47.2
   Yes 140 52.8
TST history   
   No TST in medical history 33 12.5
   Negative TST in history 151 57
   Positive TST in history 81 30.6
Job category   
   Nurse 94 35.5
   Physician 17 6.4
   Other professions 154 58.1
QFT-IT   
   Negative 246 92.8
   Positive 19 7.2
Workplace   
   Admission ward 18 6.8
   Infection ward 110 41.5
   Other 137 51.7
Reason for testing   
   Serial examination 246 92,8
   Contact tracing 19 7,2
Total 265 100
  1. * mean age 34.7, standard deviation 12.6