Background and Purpose—
This study aimed to develop and validate a nomogram for predicting the risk of stroke recurrence among young adults after ischemic stroke.
Methods—
Patients aged between 18 and 49 years with first-ever ischemic stroke were selected from the Nanjing Stroke Registry Program. A stepwise Cox proportional hazards regression model was employed to develop the best-fit nomogram. The discrimination and calibration in the training and validation cohorts were used to evaluate the nomogram. All patients were classified into low-, intermediate-, and high-risk groups based on the risk scores generated from the nomogram.
Results—
A total of 604 patients were enrolled in this study. Hypertension (hazard ratio [HR], 2.038 [95% CI, 1.504–3.942];
P
=0.034), diabetes mellitus (HR, 3.224 [95% CI, 1.848–5.624];
P
<0.001), smoking status (current smokers versus nonsmokers; HR, 2.491 [95% CI, 1.304–4.759];
P
=0.006), and stroke cause (small-vessel occlusion versus large-artery atherosclerosis; HR, 0.325 [95% CI, 0.109–0.976];
P
=0.045) were associated with recurrent stroke. Educational years (>12 versus 0–6; HR, 0.070 [95% CI, 0.015–0.319];
P
=0.001) were inversely correlated with recurrent stroke. The nomogram was composed of these factors, and successfully stratified patients into low-, intermediate-, and high-risk groups (
P
<0.001).
Conclusions—
The nomogram composed of hypertension, diabetes mellitus, smoking status, stroke cause, and education years may predict the risk of stroke recurrence among young adults after ischemic stroke.