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Table 1 Study participant demographic, socioeconomic, epidemiological and clinical characteristics

From: Rationing tests for drug-resistant tuberculosis – who are we prepared to miss?

  All patients Sputum culture negative for TB Sputum culture positive for TB
Drug-susceptible TBa MDR-TB Mono-resistant TBa
N   Unknown (n) n   Unknown (n) n   Unknown (n) n   Unknown (n) n   Unknown (n)
Percentage of all subjects Percentage of all patients Percentage of all subjects Percentage of all subjects Percentage of all patients with drug sensitive TB Percentage of all subjects Percentage of patients with MDR-TB Percentage of all subjects Percentage of patients with mono-resistant TB
Number of subjects 1,545 100.0    1,398 90.5 0 115 7.4 100.0 0 20 1.3 100.0 0 12 0.8 100.0 0
Age (mean) 36    0 37   0 32    0 32    0 32    0
Male sex 621 40.2 49.0 0 549 35.5 0 56 3.6 48.7 0 9 0.6 45.0 0 7 0.5 58.3 0
Smear positive 82 5.3 50.3 0 8 0.5 0 60 3.9 52.2 0 11 0.7 55.0 0 3 0.2 25.0 0
Povertyb 520 33.7 28.6 33 478 30.9 27 34 2.2 29.6 5 6 0.4 30.0 1 2 0.1 16.7 0
Overcrowdingc 250 16.2 15.0 20 228 14.8 16 14 0.9 12.2 4 7 0.5 35.0 0 1 0.1 8.3 0
TB contact 809 52.4 51.0 4 734 47.5 4 59 3.8 51.3 0 11 0.7 55.0 0 5 0.3 41.7 0
Smoker (current/ex) 89 5.8 18.4 7 62 4.0 4 26 1.7 22.6 3 1 0.1 5.0 0 0 0.0 0.0 0
Drug user 23 1.5 4.1 3 17 1.1 3 6 0.4 5.2 0 0 0.0 0.0 0 0 0.0 0.0 0
Excess alcohol 185 12.0 19.7 3 156 10.1 3 25 1.6 21.7 0 3 0.2 15.0 0 1 0.1 8.3 0
Clinical information
Prior BCG vaccine 1,338 86.6 90.5 21 1,205 78.0 21 105 6.8 91.3 0 18 1.2 90.0 0 10 0.6 83.3 0
Cough 1,290 83.5 87.1 1 1,162 75.2 1 101 6.5 87.8 0 17 1.1 85.0 0 10 0.6 83.3 0
Fever 514 33.3 47.6 5 444 28.7 4 50 3.2 43.5 1 14 0.9 70.0 0 6 0.4 50.0 0
Haemoptysis 238 15.4 31.3 5 192 12.4 5 41 2.7 35.7 0 3 0.2 15.0 0 2 0.1 16.7 0
Weight loss 754 48.8 69.4 8 652 42.2 8 80 5.2 69.6 0 15 1.0 75.0 0 7 0.5 58.3 0
Night sweats 567 36.7 49.0 8 495 32.0 7 54 3.5 47.0 1 12 0.8 60.0 0 6 0.4 50.0 0
Chest pain 940 60.8 66.7 7 842 54.5 7 77 5.0 67.0 0 12 0.8 60.0 0 9 0.6 75.0 0
Breathlessness 680 44.0 51.0 13 605 39.2 13 55 3.6 47.8 0 12 0.8 60.0 0 8 0.5 66.7 0
  1. a Susceptible to isoniazid and rifampicin; 11 isoniazid mono-resistant, 1 rifampicin mono-resistant
  2. b Participants with a socioeconomic score indicating poverty [9]
  3. c Participants who meet criteria for overcrowding [9] if total household residents/number bedrooms >3.4
  4. TB, Tuberculosis; MDR-TB, Multidrug-resistant tuberculosis