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Table 1 Description of study cohort

From: High mortality among tuberculosis patients on treatment in Nigeria: a retrospective cohort study

Variable Frequency Percent
Age group (years)
 15–24 260 19.5
 25–34 396 30.0
 35–44 335 25.1
 45–54 185 13.9
 55–64 87 6.5
  > 65 72 5.4
 Missing 93  
Gender
 Male 81 56.9
 Female 614 43.1
Residence
 Within Kano 1,014 71.2
 Outside Kano 410 28.8
Referral facility
 DOTS-linked facility 624 45.7
 Non DOTS-linked facility 740 54.3
 Missing 60  
TB diagnosis
 Bacteriological 468 32.9
 Clinical 956 67.1
TB site
 Pulmonary 936 67.4
 Extra-pulmonary 229 16.5
 Both 223 16.1
 Missing 36  
HIV/ART status
 HIV- 683 48.0
 HIV+ on ART 90 6.3
 HIV+ not on ART 478 33.6
 Unknown HIV status 173 12.2
Previous TB treatment
 No 1,082 76.0
 Yes 342 24.0
Year of diagnosis
 2010–2011 413 29.0
 2012 321 22.5
 2013 450 31.6
 2014 240 16.9
Treatment outcome
 Successful 745 52.3
 Lost to follow-up 366 25.7
 Died 237 16.6
 Failed 33 2.3
 Transferred-out 43 3.0