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Background: Although chronic subdural hematoma (CSDH) incidence has increased, there is limited evidence to guide patient management after surgical evacuation., Objective: To identify predictors of reoperation and functional outcome after CSDH surgical evacuation., Methods: We identified all patients with CSDH between 2010 and 2018. Clinical and radiographic variables were collected from the medical records. Outcomes included reoperation within 90 days and poor (3-6) modified Rankin Scale score at 3 months., Results: We identified 461 surgically treated CSDH cases (396 patients). The mean age was 70.1 years, 29.7 % were females, 298 (64.6 %) underwent burr hole evacuation, 152 (33.0 %) craniotomy, and 11 (2.4 %) craniectomy. Reoperation rate within 90 days was 12.6 %, whereas 24.2 % of cases had a poor functional status at 3 months. Only female sex was associated with reoperation within 90 days (OR = 2.09, 95 % CI: 1.17-3.75, P  = 0.013). AMS on admission (OR = 5.19, 95 % CI: 2.15-12.52, P  < 0.001) and female sex (OR = 3.90, 95 % CI: 1.57-9.70, P  = 0.003) were independent predictors of poor functional outcome at 3 months., Conclusion: Careful management of patients with the above predictive factors may reduce CSDH reoperation and improve long-term functional outcomes. However, larger randomized studies are necessary to assess long-term prognosis after surgical evacuation., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2023 The Authors.)