Development of a brief questionnaire to predict long-term disability

Area of Science:

• Occupational health
• Musculoskeletal disorders
• Disability assessment

Background:

• Work-related back injuries are a significant cause of long-term disability.
• Early identification of at-risk individuals is crucial for timely intervention.
• Existing assessment tools may not be brief or practical for immediate post-injury use.

Purpose of the Study:

• To develop and validate a concise questionnaire for assessing long-term work disability risk following a back injury.
• To identify key predictors of prolonged disability in injured workers.
• To provide a practical tool for healthcare providers and occupational health specialists.

Main Methods:

• Prospective cohort study of 1885 workers with new back injuries.
• Data collected approximately 3 weeks post-injury, including pain, function, psychosocial, and work factors.
• Classification and regression tree analysis to build a predictive model for disability status at 1 year.

Main Results:

• A predictive model was developed using pain interference with work, current work status, and radiating leg pain.
• This model accurately classified 77% of workers regarding their 1-year work disability status.
• Key predictors identified were significant pain interference, not currently working, and presence of radiating leg pain.

Conclusions:

• A brief, worker-completed questionnaire incorporating pain interference, work status, and leg pain can effectively assess long-term work disability risk.
• This tool may aid in early identification and management of workers at high risk for prolonged disability.
• Further validation in diverse populations is warranted.