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Table 1 Demographic and clinical characteristics

From: Treatment outcomes for isoniazid-resistant tuberculosis under program conditions in British Columbia, Canada

Characteristic Total patients
n = 165
Sex (n, %)
 Male 103 (62.4)
 Female 62 (37.6)
Age, years (IQR) 46 (32.5–61)
Region of origin (n, %)
Canadian born 44 (26.7)
Foreign born
 TB incidence >30 per 100,000 115 (69.7)
 TB incidence of ≤30 per 100,000 5 (3.0)
Unknown country of birth 1 (0.6)
Year of diagnosis
 2002–2006 37 (22.4)
 2007–2010 56 (33.9)
 2011–2014 72 (43.6)
Co-morbidities (n, %)
 Diabetes mellitus 19 (11.5)
 Immune suppressive medication 13 (7.9)
 Malignancy 7 (4.2)
 HIV positive 6 (3.6)
 Chronic kidney disease 2 (1.2)
Prior history of TB treatment
 No prior TB treatment 127 (77.0)
 Prior TB treatment 24 (14.5)
 Prior TB treatment unknown 14 (8.5)
Disease site
 Pulmonary 106 (64.2)
 Extra-pulmonary 42 (25.5)
 Pulmonary and extra-pulmonary 17 (10.3)
Extent of pulmonary diseasea
 Baseline positive AFB smear 73 (59.3)
 Cavitary lesions in chest radiography 50 (40.7)
Isoniazid resistance (n, %)
 INH, both high and low level resistance 84 (50.9)
 INH, only low level resistance 81 (49.1)
  1. aThe denominator used to calculate the percentage for Extent of pulmonary disease was based on cases with pulmonary involvement (n = 123)