Comparative Analysis of Risk Factors and Clinical Outcomes in Young Patients with Acute Ischemic and Hemorrhagic Stroke

Background Stroke is a leading cause of death and disability worldwide and has significant socioeconomic impacts, particularly among young adults. This study focused on young adults (18–55 years) who experienced acute ischemic (AIS) or hemorrhagic stroke (HS) in Zanjan, Iran. Methods A retrospective registry-based analysis was conducted using data from the Vali-e-Asr Hospital Stroke Center. A total of 5345 stroke patients were recorded between March 2016 and June 2023, and 616 young stroke survivors were included. Baseline demographic data, stroke risk factor data, functional status (modified Rankin scale (mRS) score, stroke severity (NIHSS score), treatment history, and mortality were analyzed. The statistical analyses included chi-square tests, independent t tests, and logistic regression. Results The cohort comprised 525 AIS (85.23%) and 91 HS (14.77%) patients. Significant differences were observed between groups in terms of atrial fibrillation incidence, antiplatelet treatment history, hypertension, previous smoking, and recent stroke history. HS patients had a higher baseline NIHSS score (12.90 ± 6.04 vs. 7.69 ± 8.56, p < 0.05). In-hospital and three-month mortality rates were significantly greater in the HS group. Factors significantly associated with in-hospital mortality included hemorrhagic stroke, female sex, higher NIHSS score, and current smoking status. Lower odds of achieving excellent functional outcomes and functional independence at three months were noted for HS patients, influenced by NIHSS scores and prior health conditions. Conclusion Young stroke patients, particularly those with hemorrhagic stroke, have higher mortality and poorer outcomes. The key risk factors included stroke type, NIHSS score, smoking status, and sex. Identifying and managing these factors could improve patient outcomes.