Impact of post-stroke depression on the prognosis of stroke-associated pneumonia and analysis of predictive factors: A retrospective study of 186 patients

Figure 1 Receiver operating characteristic curves comparing the diagnostic performance of the combined predictive model and individual predictors for adverse prognosis in stroke-associated pneumonia patients. The combined model integrating clinical, biochemical, and microbiological parameters achieved the highest area under the curve (AUC; 0.91), followed by Acute Physiology and Chronic Health Evaluation II score alone (AUC = 0.82). All curves were significantly superior to the reference line (all P < 0.001). AUC: Area under the curve; APACHE II: Acute Physiology and Chronic Health Evaluation II; PSD: Post-stroke depression; BDNF: Brain-derived neurotrophic factor; MV: Mechanical ventilation.