Evaluating a Guideline for Tuberculosis Screening
Author Information
Author(s): René G English, Max O Bachmann, Eric D Bateman, Merrick F Zwarenstein, Lara R Fairall, Angeni Bheekie, Majara Bosielo P, Carl Lombard, Robert Scherpbier, Salah Eddine Ottomani
Primary Institution: University of Cape Town Lung Institute
Hypothesis
The study aims to evaluate the diagnostic accuracy of the PALSA guideline in identifying patients requiring screening for tuberculosis.
Conclusion
The PALSA guideline is an effective screening tool for identifying patients requiring bacteriological screening for pulmonary tuberculosis in a primary care setting.
Supporting Evidence
- The nurse identified 516 patients as TB suspects compared to 365 by physicians.
- The sensitivity of the nurse using the guideline was 76% and specificity was 77%.
- Weight loss, pleuritic pain, and night sweats were strongly associated with confirmed TB.
Takeaway
This study shows that nurses can use a special guideline to help find patients who might have tuberculosis, which is really important for getting them the right care.
Methodology
A prospective, cross-sectional study evaluating 1392 adult patients with respiratory symptoms using the PALSA guideline.
Potential Biases
Potential bias due to the reliance on clinical judgment without access to all diagnostic tools.
Limitations
The absence of sputum testing in patients not suspected of tuberculosis by primary care physicians limited the ability to use bacteriological diagnosis as the reference standard.
Participant Demographics
Median age of participants was 48 years, with 63% female; many had chronic respiratory diseases.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% CI 71%–79%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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