ArticleInfection and drug resistance2026
Predictive Value of Nutritional Status in Sputum Culture Conversion Among Patients with Nontuberculous Mycobacterial Pulmonary Disease: A Retrospective Cohort Study.
Article in Infection and drug resistance, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Nutritional status has been increasingly recognized as an important determinant of outcomes in nontuberculous mycobacterial pulmonary disease (NTM-PD), but its predictive value for sputum culture conversion remains unclear. Methods: This retrospective cohort study included 416 patients with NTM-PD between January 2016 and September 2024. Patients were categorized based on nutritional status and sputum culture conversion. Logistic regression was used to identify independent predictors, and a combined predictive model was evaluated using ROC curves. Kaplan-Meier analysis assessed time to culture conversion. Internal validation was performed using bootstrap resampling. Results: Among 416 patients, 109 (26.2%) achieved sputum culture conversion. Malnourished patients had significantly lower conversion rates. Multivariable analysis showed age (OR=1.048, 95% CI: 1.012-1.085), BMI (OR=0.746, 95% CI: 0.668-0.835), hemoglobin (OR=0.936, 95% CI: 0.906-0.967), and total protein (OR=0.920, 95% CI: 0.853-0.992) were independent predictors. The combined model demonstrated strong predictive performance (AUC=0.925, sensitivity=89.3%, specificity=78.0%). Conclusion: Nutritional status is significantly associated with sputum culture conversion in NTM-PD. A combined model incorporating nutritional indicators may assist in risk stratification, although further validation is required.
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