Prior Concussions and Risk of Disability for Patients After a Motor Vehicle Crash.

ABSTRACT:

Importance

Recovery after a motor vehicle crash can be slow, frustrating, and incomplete with lingering neurocognitive complications.

Objective

To examine whether a prior concussion is associated with increased risk of long-term disability after a motor vehicle crash.

Design, setting, and participants

This cohort study included adults surviving a motor vehicle crash treated in Ontario, Canada, from April 2003 to March 2023 with analyses to November 2025.

Exposure

Prior concussion.

Main outcome and measures

Long-term disability defined by official social service records, comparing those with a prior concussion and those with no history of a prior concussion.

Results

A total of 907 984 patients injured in a motor vehicle crash were included (mean [S

SUBMITTER: Redelmeier DA 

PROVIDER: S-EPMC12824782 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature