External Validation of the A2DS2 Score to Predict Stroke-Associated Pneumonia in Population

Flowchart of study population.

The flowchart was used to illustrate how the study population was selected.   

SAP was 18.8%, which ranged from 9.0% in patients with lower A2DS2 scores (0–4) to 65.0% in those with higher scores of 5 to 10 (P for trend <0.001). The C statistic was 0.836 (95% confidence interval, 0.803–0.868) through the A2DS2 score, suggesting excellent discrimination in the HNSR.