Temporal Patterns and Predictors of Disability Trajectories Following Occupational Injury: A National Longitudinal Cohort Study
Trial Snapshot
- Phase
- Not Applicable
- Status
- Not yet recruiting
- Sponsor
- Enrollment
- 1,500,000
- Locations
- 1
- Primary Endpoint
- Time From First Observed Occupational Injury Claim to Permanent Disability
Study Overview
Brief Summary
This observational study will examine patterns of disability following occupational injuries using national administrative records from 2020 through 2024.
The study will evaluate how disability status changes over time after a recognized work-related injury. Particular attention will be given to temporary disability, progression to permanent disability, disability percentage, repeated disability determinations, and recurrent occupational injury claims.
The study will also examine whether characteristics such as age, sex, type of occupational injury, statutory impairment category, geographic region, and year of injury are associated with different disability trajectories.
No treatment or intervention will be assigned as part of this study. All information will be obtained retrospectively from existing administrative records.
Detailed Description
Occupational injuries may result in short-term functional impairment, prolonged temporary disability, permanent disability, or repeated disability determinations. However, large-scale longitudinal information describing how disability status evolves after occupational injury is limited.
This retrospective observational cohort study will use national administrative data on recognized occupational injury claims recorded between January 1, 2020, and December 31, 2024. The database includes chronological claim and disability-determination records, statutory impairment classifications, assigned disability percentages, and temporary or permanent disability status.
The primary objective is to characterize longitudinal disability trajectories following occupational injury. The study will evaluate transitions from temporary to permanent disability and the time from the first observed occupational injury claim to permanent disability determination.
Secondary objectives include evaluating the severity of permanent disability, changes in disability percentage over time, repeated temporary or permanent disability determinations, recurrent occupational injury claims, and patterns of disability progression.
Where available, analyses will examine differences according to demographic characteristics, occupational injury category, statutory impairment classification, geographic region, and calendar year.
Study Design
- Study Type
- Observational
- Observational Model
- Cohort
- Time Perspective
- Retrospective
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •18 years old and older
- •Individuals with a recognized occupational injury claim recorded in the national administrative database between January 1, 2020, and December 31,
- •Availability of an anonymized claimant identifier permitting linkage of chronological claim and disability-determination records.
- •Availability of the date of the first observed occupational injury claim.
- •Availability of disability-status information and/or disability determination records during the study period.
Exclusion Criteria
- •Records not classified as recognized occupational injury claims.
- •Records that cannot be linked to an individual claimant because of missing or invalid anonymized identifiers.
- •Records with missing or invalid dates that prevent chronological reconstruction of the disability trajectory.
- •Duplicate records representing the same claim or disability determination.
Arms & Interventions
Workers With Recognized Occupational Injuries
Individuals with recognized occupational injury claims recorded in the national administrative database between January 1, 2020, and December 31, 2024. Chronologically linked claim and disability-determination records will be used to evaluate temporary and permanent disability status, disability percentage, repeated determinations, and disability progression over time.
Intervention: Recognized Occupational Injury (Other)
Outcomes
Primary Outcomes
Time From First Observed Occupational Injury Claim to Permanent Disability
Time Frame: From the first observed occupational injury claim until the first permanent disability determination or end of follow-up, up to 5 years
Time in days from the first observed occupational injury claim to the first recorded permanent disability determination. Participants without a permanent disability determination will be censored at their last available record or December 31, 2024, whichever occurs first.
Secondary Outcomes
No secondary outcomes reported
Investigators
Sergio Gabriel Susmallian
Medicine doctor
Assuta Medical Center