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Abstract
Purpose: The goal of our study was to determine if patients with Parkinson's disease (PD) are more susceptible to hospitalization for traumatic brain injury (TBI). Methods: The US Nationwide Inpatient Sample database was queried (2004–2011) to identify cohorts of patients with PD (N = 1 047 656) and without PD (N = 115 95 173). The age range of the study population was 60–89 years. The incidence of TBI among patients with PD was compared to the incidence of TBI in patients without PD. A multivariate logistic regression model, adjusted for all covariates that significantly differed in the bivariate analyses, was used to determine if PD was an independent predictor of TBI hospitalization. Results: The incidence of TBI hospitalization was significantly higher (relative risk: 1.76, 95% CI: 1.73–1.80) in the PD cohort. The PD cohort with TBI had fewer comorbidities and risk factors for falls/TBI compared to the non-PD cohort with TBI. The multivariable analysis, adjusting for other TBI risk factors, revealed that PD status increased the likelihood of TBI hospitalization (odds ratio: 2.99, 95% CI: 2.93–3.05). Conclusion: Our study shows that patients with PD are more susceptible to hospitalization for TBI. A greater proportion of fall-related TBI occurs in patients with PD compared to patients without PD. Further research is needed to prevent falls in PD patients to avoid TBI.