Adjusted hazard ratios of stroke events among the individuals with pneumococcal pneumonia and those without pneumococcal pneumonia stratified by comorbidities for the first year of follow-up.

Abbreviation: HR, hazard ratio; 95% CI, 95% confidence interval.*Comorbidities included hypertension, diabetes, coronary artery disease, hyperlipidemia, atrial fibrillation, chronic renal disease, obesity, and peripheral arterial disease.