Volume 21, Number 6—June 2015
Research
Risk Factors for Acquisition of Drug Resistance during Multidrug-Resistant Tuberculosis Treatment, Arkhangelsk Oblast, Russia, 2005–2010
Table 5
Risk factors for acquiring resistance to second-line companion drugs during MDR TB treatment, 153 patients, Arkhangelsk Oblast, Russia, 2005–2010*
Variable† | Total | Acquired resistance to ETA or PAS, no. (%) |
p value‡ | |
---|---|---|---|---|
Yes | No | |||
Enrollment cohort | ||||
2005–2006 | 58 | 0 (0) | 58 (100) | 0.08 |
2007–2008 | 95 | 6 (6.3) | 89 (93.7) | |
Thoracic surgery during current episode | ||||
Yes | 2 | 1 (50) | 1 (50) | 0.08 |
No | 151 | 5 (3.3) | 146 (96.7) | |
Ever received OFX during current episode | ||||
Yes | 133 | 2 (1.5) | 131 (98.5) | 0.003 |
No | 20 | 4 (20) | 16 (80) | |
Ever received MOX during current episode | ||||
Yes | 28 | 5 (17.9) | 23 (82.1) | <0.001 |
No | 125 | 1 (0.8) | 124 (99.2) | |
Ever received a third-line drug during current episode | ||||
Yes | 77 | 6 (7.8) | 71 (92.2) | 0.03 |
No | 76 | 0 (0) | 76 (100) |
*OFX, ofloxacin; MDR TB, multidrug-resistant tuberculosis; MOX, moxifloxacin.
†Certain variables were tested for association but omitted from table because results were not statistically significant at α = 0.1.
‡Fisher exact test.