Impact of the DOTS Strategy on Tuberculosis Control
Author Information
Author(s): Ziad Obermeyer, Jesse Abbott-Klafter, Christopher J. L. Murray
Primary Institution: Harvard Medical School
Hypothesis
Has the expansion of the DOTS strategy improved tuberculosis case finding and treatment success?
Conclusion
The DOTS strategy improved overall treatment success but had no effect on case detection.
Supporting Evidence
- DOTS population coverage had a significant effect on treatment success rates.
- Countries with full DOTS coverage saw at least an 18% increase in treatment success.
- Statistical analysis showed no significant impact of DOTS on case detection.
Takeaway
The DOTS strategy helps more people complete their tuberculosis treatment, but it doesn't find more cases of the disease.
Methodology
Time-series cross-sectional analysis using reported case notification data.
Potential Biases
Potential biases due to changes in reporting practices and the reliance on case notification data.
Limitations
The analysis is limited by the availability and quality of data on tuberculosis incidence and treatment outcomes.
Participant Demographics
121 developing countries with available HIV estimates and DOTS programme data.
Statistical Information
P-Value
p<0.0001
Confidence Interval
95% CI: 5–31%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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