Tuberculosis Treatment Outcomes and Predictive Factors
Summary
Tuberculosis remains a leading cause of infectious mortality worldwide, underpinned by complex interactions between pathogen characteristics, patient demographics and health-system factors. Treatment outcomes are typically categorised as cure, treatment completion, failure, death or loss to follow-up. Globally, success rates for drug-sensitive disease hover around 80–85 per cent, but fall markedly for patients with comorbidities, drug resistance or socio-economic vulnerabilities. Key predictive factors include age, nutritional status, HIV co-infection, presence of multidrug-resistant strains and access to supervised therapy. Social determinants such as gender, geography and health-seeking behaviours also shape adherence and ultimate outcome. Recent work has focused on refining risk stratification models, enhancing diagnostic speed and expanding patient support interventions. By identifying high-risk groups early, clinicians and programme managers can tailor interventions—such as nutritional supplementation, decentralised care or closer monitoring—to optimise cure rates and reduce transmission.
Research from Nature Portfolio
A facility-based retrospective analysis in a resource-limited setting revealed an overall treatment success rate approaching 88 per cent among over 360 patients managed under national protocols. Male gender, normal body mass index, HIV-negative status and absence of presumptive drug resistance emerged as significant predictors of cure. The study highlighted the importance of routine nutritional and resistance screening at treatment initiation, suggesting that tailored support for undernourished or HIV-positive individuals could close persistent gaps in programme performance.
Tuberculosis Treatment Outcomes and Predictive Factors publication trend
The graph below shows the total number of articles in tuberculosis treatment outcomes and predictive factors across all publications each year (not limited to Nature Index journals).
Technical terms
Treatment success rate: Proportion of patients who are cured or complete a full course of therapy without relapse.
Loss to follow-up: Discontinuation of treatment by a patient before its planned completion.
Multidrug-resistant tuberculosis (MDR-TB): Infection caused by strains of Mycobacterium tuberculosis resistant to at least isoniazid and rifampicin.
Directly Observed Treatment Short Course (DOTS): WHO-endorsed strategy for TB control involving supervised administration of medication.
Smear conversion: Change from a positive to a negative microscopy result during treatment, indicating bacterial clearance.
References
- Tuberculosis treatment outcomes and associated factors among tuberculosis patients treated at healthcare facilities of Motta Town, Northwest Ethiopia: a five-year retrospective study. Scientific Reports (2024).
- Assessing intersectional gender analysis in Nepal’s health management information system: a case study on tuberculosis for inclusive health systems. Infectious Diseases of Poverty (2024).
- Loss to follow-up tuberculosis treatment and associated factors among adults attending at public health facilities in Warder District, Somali Regional State, Eastern Ethiopia. Frontiers in Public Health (2023).
- Factors predictive of the success of tuberculosis treatment: A systematic review with meta-analysis. PLOS ONE (2019).
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