Occupational InjuryOIDTNCT07839559
Disability Trajectories After Occupational Injury
An observational study of Occupational Injury and Work-Related Disability, run by Sergio Gabriel Susmallian at 1 site in Israel.
Trial 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. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Occupational Injury, Work-Related Disability
- What is being tested?
- Recognized Occupational Injury
- How many people
- 1,500,000 participants
- Where
- 1 siteIsrael
- Study dates
- 1 Sep 2026to 1 Nov 2026
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: The study population will include individuals with recognized occupational injury claims recorded in the national administrative database between January 1, 2020, and December 31, 2022. Eligible claimants will be followed through December 31, 2024 using chronologically linked administrative records. The cohort will include all eligible claimants with valid anonymized identifiers and sufficient date information to reconstruct claim and disability-determination histories. Data will include temporary and permanent disability status, assigned disability percentages, statutory impairment classifications, and repeated claim or disability-determination records. No participants will be recruited prospectively.
Who may be able to join
- 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, 2022.
- 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.
Who cannot join
- 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.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Israel1 site
National Insurance Institute of Israel
Jerusalem, 91099
Eytan Ellenberg, M.D., 972546253356, eytam_ellenberg@yahoo.fr
About this study
Official title: Temporal Patterns and Predictors of Disability Trajectories Following Occupational Injury: A National Longitudinal Cohort Study
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.
Read more
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.
Read the 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.
Claim records belonging to the same individual will be linked using anonymized claimant identifiers to reconstruct the chronological sequence of occupational injury claims and disability determinations. Time-to-event and longitudinal statistical methods will be used to identify factors associated with permanent disability and other disability trajectories.
Because the study uses previously collected administrative data, participants will not undergo study-specific interventions, treatment assignments, or additional clinical procedures.
- Conditions
- Occupational Injury, Work-Related Disability
- Being tested
- Recognized Occupational Injury
- Keywords
- Occupational injury, Work-related injury, Disability progression, Workers' compensation, Recurrent occupational injury
- Medical subject headings
- Occupational Injuries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Recognized Occupational InjuryOther
The exposure of interest is a recognized work-related injury recorded in the national administrative claims database. No intervention, treatment, or procedure is assigned as part of the study. Existing records will be analyzed to characterize subsequent temporary and permanent disability trajectories.
| Study group | Role | What they receive |
|---|---|---|
| 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. Receives: Other: Recognized Occupational Injury |
What is being measured
The primary outcome is the main question the study is designed to answer.
Time From First Observed Occupational Injury Claim to Permanent Disability
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.
Measured: From the first observed occupational injury claim until the first permanent disability determination or end of follow-up, up to 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Sep 2026
- Study start1 Sep 2026 (estimated)
- Primary completion1 Oct 2026 (estimated)
- Study completion1 Nov 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (5)Papers the sponsor has linked to this study.
- Other trials for Occupational InjuryStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Retrospective
- Enrolment
- 1,500,000 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Sergio Gabriel Susmallian
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Sergio Gabriel Susmallian, Assuta Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07839559
- Sponsor's protocol ID
- BTL004-2026
- Acronym
- OIDT
- Status last verified
- Sep 2026
- First submitted
- 19 Sep 2026
- Last updated
- 24 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Individual participant data will not be shared because the study uses de-identified administrative records obtained from a national insurance database under data-use and confidentiality restrictions. The investigators are not authorized to redistribute participant-level records. Aggregate results and summary statistical outputs may be reported in publications.
Publications
Langley J, Lilley R, Samaranayaka A, Derrett S. Work status and disability trajectories over 12 months after injury among workers in New Zealand. N Z Med J. 2014 Mar 7;127(1390):53-60.
PubMed 24670590Stover B, Wickizer TM, Zimmerman F, Fulton-Kehoe D, Franklin G. Prognostic factors of long-term disability in a workers' compensation system. J Occup Environ Med. 2007 Jan;49(1):31-40. doi: 10.1097/01.jom.0000250491.37986.b6.
PubMed 17215711Berecki-Gisolf J, Clay FJ, Collie A, McClure RJ. Predictors of sustained return to work after work-related injury or disease: insights from workers' compensation claims records. J Occup Rehabil. 2012 Sep;22(3):283-91. doi: 10.1007/s10926-011-9344-y.
PubMed 22143197McLeod CB, Reiff E, Maas E, Bultmann U. Identifying return-to-work trajectories using sequence analysis in a cohort of workers with work-related musculoskeletal disorders. Scand J Work Environ Health. 2018 Mar 1;44(2):147-155. doi: 10.5271/sjweh.3701. Epub 2017 Dec 23.
PubMed 29274274Sears JM, Fulton-Kehoe D, Hogg-Johnson S. Initial return to work and long-term employment patterns: Associations with work-related permanent impairment and with participation in workers' compensation-based return-to-work programs. Am J Ind Med. 2021 May;64(5):323-337. doi: 10.1002/ajim.23233. Epub 2021 Feb 22.
PubMed 33616241
Study at a glance
From the registry record, last updated by the sponsor on 24 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Temporal Patterns and Predictors of Disability Trajectories Following Occupational Injury: A National Longitudinal Cohort Study
- ClinicalTrials.gov ID
- NCT07839559
- Acronym / sponsor ID
- OIDT / BTL004-2026
- Conditions
- Occupational Injury, Work-Related Disability
- Keywords
- Occupational injury, Work-related injury, Disability progression, Workers' compensation, Recurrent occupational injury
- Study type
- Observational
- Recruitment status
- Not yet recruiting
- Enrolment
- 1,500,000 participants (estimated)
- Lead sponsor
- Sergio Gabriel SusmallianUniversity, hospital or other
- Study start
- 1 Sep 2026 (estimated)
- Primary completion
- 1 Oct 2026 (estimated)
- Study completion
- 1 Nov 2026 (estimated)
- First posted
- 24 Sep 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Claim records belonging to the same individual will be linked using anonymized claimant identifiers to reconstruct the chronological sequence of occupational injury claims and disability determinations. Time-to-event and longitudinal statistical methods will be used to identify factors associated with permanent disability and other disability trajectories.
Because the study uses previously collected administrative data, participants will not undergo study-specific interventions, treatment assignments, or additional clinical procedures.
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Workers With Recognized Occupational Injuries | – | Other: Recognized Occupational InjuryIndividuals 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. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- The study population will include individuals with recognized occupational injury claims recorded in the national administrative database between January 1, 2020, and December 31, 2022. Eligible claimants will be followed through December 31, 2024 using chronologically linked administrative records. The cohort will include all eligible claimants with valid anonymized identifiers and sufficient date information to reconstruct claim and disability-determination histories. Data will include temporary and permanent disability status, assigned disability percentages, statutory impairment classifications, and repeated claim or disability-determination records. No participants will be recruited prospectively.
Key inclusion criteria (5 listed)
- 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, 2022.
- 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.
Key exclusion criteria (4 listed)
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Recognized Occupational InjuryThe exposure of interest is a recognized work-related injury recorded in the national administrative claims database. No intervention, treatment, or procedure is assigned as part of the study. Existing records will be analyzed to characterize subsequent temporary and permanent disability trajectories. | Other | Workers With Recognized Occupational Injuries |
Primary outcome
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.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Sep 2026.
- Background: PubMed 24670590Langley J, Lilley R, Samaranayaka A, Derrett S. Work status and disability trajectories over 12 months after injury among workers in New Zealand. N Z Med J. 2014 Mar 7;127(1390):53-60.
- Background: PubMed 17215711Stover B, Wickizer TM, Zimmerman F, Fulton-Kehoe D, Franklin G. Prognostic factors of long-term disability in a workers' compensation system. J Occup Environ Med. 2007 Jan;49(1):31-40. doi: 10.1097/01.jom.0000250491.37986.b6.
- Background: PubMed 22143197Berecki-Gisolf J, Clay FJ, Collie A, McClure RJ. Predictors of sustained return to work after work-related injury or disease: insights from workers' compensation claims records. J Occup Rehabil. 2012 Sep;22(3):283-91. doi: 10.1007/s10926-011-9344-y.
- Background: PubMed 29274274McLeod CB, Reiff E, Maas E, Bultmann U. Identifying return-to-work trajectories using sequence analysis in a cohort of workers with work-related musculoskeletal disorders. Scand J Work Environ Health. 2018 Mar 1;44(2):147-155. doi: 10.5271/sjweh.3701. Epub 2017 Dec 23.
- Background: PubMed 33616241Sears JM, Fulton-Kehoe D, Hogg-Johnson S. Initial return to work and long-term employment patterns: Associations with work-related permanent impairment and with participation in workers' compensation-based return-to-work programs. Am J Ind Med. 2021 May;64(5):323-337. doi: 10.1002/ajim.23233. Epub 2021 Feb 22.
- Individual participant dataSharing planned: No. Individual participant data will not be shared because the study uses de-identified administrative records obtained from a national insurance database under data-use and confidentiality restrictions. The investigators are not authorized to redistribute participant-level records. Aggregate results and summary statistical outputs may be reported in publications.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Occupational Injury and Work-Related Disability, run by Sergio Gabriel Susmallian at 1 site in Israel.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 24 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Israel. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact sergio Susmallian, M.D. (0524637743, sergio9@bezeqint.net), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
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). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07839559, which also lists 5 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Sep 2026.