Abstract
Objectives
We investigated the incidence of tuberculosis (TB) in patients with newly diagnosed oral cancer and analyzed the risk factors for TB development and mortality in oral cancer patients.
Materials and methods
We used Taiwan's National Health Insurance Database to determine the incidence of TB and to analyze the risk factors for TB in patients newly diagnosed with oral cancer. From 2000 to 2011, we identified 40,327 oral cancer patients and the same number of subjects from the general population matched for sex, age, and comorbidities at a 1:1 ratio.
Results
Compared with the matched cohort, oral cancer patients exhibited a higher risk for TB (adjusted hazard ratio (aHR) 2.36, 95% confidence interval (CI) 2.06–2.71). Age ≥ 50 (aHR 1.90, 95% CI 1.57–2.29), being male (aHR 1.98, 95% CI 1.36–2.89), having diabetes mellitus (aHR 1.31, 95% CI 1.05–1.64), alcohol use disorder (aHR 1.42, 95% CI 1.06–1.89), human immunodeficiency virus (HIV) (aHR 8.24, 95% CI 2.05–33.14), chemotherapy (aHR 1.41, 95% CI 1.15–1.72), and radiotherapy for oral cancer (aHR 1.92, 95% CI 1.57–2.36) were identified as independent risk factors for TB in oral cancer patients. Hyperlipidemia was an independent protective factor for TB in oral cancer patients.
Conclusion
Old age, male sex, diabetes mellitus, alcohol use disorder, and HIV were independent risk factors for TB in patients with oral cancer.
Clinical relevance
High-risk oral cancer patients should be regularly screened for TB, especially those in endemic areas.
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