Table 3. Demographic and clinical characteristics of patients with multidrug-resistant tuberculosis in the derivation and validation groups, from Hunan Chest and Gondar University Hospitals, 2010–2014.
| Risk factors | Derivation (N = 227) | Validation (N = 343) |
|---|---|---|
| Mean (SD*) | Mean (SD*) | |
| Age (years) | 39.7± 13.7 | 38.5 ± 12.5 |
| Number (%) | Number (%) | |
| Male sex | 157 (69.2) | 239 (69.7) |
| Farmer or daily labourer | 183 (80.6) | 268 (78.1) |
| History of TB treatment | 214 (94.3) | 323 (94.2) |
| History of 2nd line TB drug treatment | 59 (25.9) | 79 (23.0) |
| Resistance to ethambutol | 83 (36.5) | 101 (29.4) |
| Resistance to any injectable TB drugs | 131 (57.7) | 178 (51.9) |
| Resistance to any fluoroquinolones | 17 (7.5) | 29 (8.4) |
| Culture did not convert at two months | 75 (33.2) | 112 (32.6) |
| Smear did not convert at two months | 54 (24.3) | 86 (25.2) |
*SD: Standard deviation