Abstract
Objective: Smoking has been associated with tuberculosis (TB); however, the effects of smoking on the effectiveness of TB treatment remain unclear. Materials and methods: Data were retrieved from case notes and interviews of subjects registered in the TB-reporting system from 2010 to 2012. Study cases were defined as subjects with TB-positive sputum cultures, whereas the controls were defined as subjects with non-TB-related pulmonary diseases. Statistical analyses included logistic regression and multivariate Cox proportional hazard regression models. Results: A total of 245 cases with cultures positive for TB and 114 controls with non-TB-related pulmonary diseases and negative sputum cultures were recruited. Current smokers had the highest failure rate (33%) for TB treatment, and they had the most severe pulmonary lesions based on chest X-ray grading. Current smokers had a 1.36-fold (95% confidence interval 1.03–2.36, P,0.05) higher odds ratio for cultures positive for TB compared with nonsmokers. In subjects with TB-positive cultures, current smoking was associated with an increase in treatment days required for cultures to convert from positive to negative (hazard ratio 1.12, 95% confidence interval 1.03–1.39; P,0.05). Conclusion: Longer periods of treatment may be required for TB patients who are current smokers.
Original language | English |
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Article number | 168 |
Pages (from-to) | 1539-1544 |
Number of pages | 6 |
Journal | Therapeutics and Clinical Risk Management |
Volume | 11 |
DOIs | |
Publication status | Published - Oct 6 2015 |
Keywords
- Chest X-ray
- Cigarette
- Immunity
- Mycobacterium tuberculosis
ASJC Scopus subject areas
- General Pharmacology, Toxicology and Pharmaceutics
- Pharmacology (medical)
- Chemical Health and Safety
- Safety Research