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Table 1 Summary of Patient Characteristics

From: Referrals for positive tuberculin tests in new health care workers and students: a retrospective cohort study

Patient Characteristics N (SD or %)
Age, years, mean (SD) 33.4 (9.5)
Sex, Female 437/630 (69%)
Foreign Born 546/630 (87%)
Mean years in Canada, if foreign-born (SD) 8.0 (8.3)
WHO Regions of birth, if foreign born  
   Americas 209/546 (38%)
   Africa 101/546 (19%)
   Eastern Mediterranean 86/546 (16%)
   Europe 78/546 (14%)
   Western Pacific 63/546 (12%)
   South-East Asia 9/546 (2%)
Reason for Screening  
   Before health care work 65/630 (10%)*
   Before health care studies 478/630 (76%)*
   Just started health care work 124/630 (20%)*
BCG vaccination:  
Yes 443/630 (70%)
No 91/630 (14%)
Unknown 96/630 (15%)
Tuberculin Skin Test #1 quantitative result, total 615/630 (98%)
   <5 mm 78/615 (13%)
   5-9 mm 59/615 (10%)
   10-14 mm 211/615(34%)
   ≥15 mm 267/615 (43%)
Tuberculin Skin Test #2 quantitative result, total 154/630 (26%)
   <5 4/154 (3%)
   5-9 4/154 (3%)
   10-14 81/154 (53%)
   ≥15 65/154 (42%)
Any Symptoms 12/630 (2%)
Any Concomitant Medical Conditions 84/630 (13%)
Any Regular Medications 136/630 (22%)
Any Smoking History 85/630 (14%)
Any Physical Examination Finding 18/630 (3%)
CXR: Normal 564/630 (90%)
   Minor Abnormality 28/630 (4%)
   Inactive TB 28/630 (4%)
   Possible Active TB 1/630 (0.2%)
   Non TB related Abnormality 6/630 (1%)
Pregnant (No CXR) 3/630 (0.5%)
  1. *Some had more than one reason for screening