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. Author manuscript; available in PMC: 2018 Nov 1.
Published in final edited form as: Ann Neurol. 2017 Oct 31;82(5):744–754. doi: 10.1002/ana.25074

Figure 1. Traumatic Brain Injury Hazard Rate Function by PD Case Status Stratified by Sex and Age.

Figure 1

Hazard rate for TBI in unadjusted models smoothed using the Epanechnikov Kernel with gray regions representing the 95% confidence intervals. Prodromal PD case status was associated with an increased risk of TBI compared to controls for all age and sex strata. The hazard rate grew larger with proximity to PD diagnosis/control reference date for prodromal PD cases compared to controls.