ISSLS Prize Winner: Early Predictors of Chronic Work Disability : A Prospective, Population-Based Study of Workers With Back Injuries

• Published in: Spine (Philadelphia, Pa. 1976) Pa. 1976), 2008-12, Vol.33 (25), p.2809-2818
• Main Authors: TURNER, Judith A, FRANKLIN, Gary, FULTON-KEHOE, Deborah, SHEPPARD, Lianne, STOVER, Bert, WU, Rae, GLUCK, Jeremy V, WICKIZER, Thomas M
• Format: Article
• Language: English
• Subjects: Adult; Awards and Prizes; Back Injuries - complications; Back Injuries - diagnosis; Back Injuries - epidemiology; Biological and medical sciences; Cerebrospinal fluid. Meninges. Spinal cord; Chronic Disease; Cohort Studies; Disability Evaluation; Female; Humans; Injuries of the nervous system and the skull. Diseases due to physical agents; Longitudinal Studies; Male; Medical sciences; Middle Aged; Nervous system (semeiology, syndromes); Neurology; Occupational Diseases - complications; Occupational Diseases - diagnosis; Occupational Diseases - epidemiology; Population; Predictive Value of Tests; Prospective Studies; Risk Factors; Traumas. Diseases due to physical agents; Young Adult
• ISSN: 0362-2436; 1528-1159
• DOI: 10.1097/BRS.0b013e31817df7a7

Prospective population-based cohort study. To identify early predictors of chronic work disability after work-related back injury. Identification of early predictors of prolonged disability after back injury could increase understanding concerning the development of chronic, disabling pain, and aid in secondary prevention. Few studies have examined predictors across multiple domains in a large, population-based sample. Workers (N = 1885) were interviewed 3 weeks (average) after submitting a lost work-time claim for a back injury. Sociodemographic, employment-related, pain and function, clinical, health care, administrative/legal, health behavior, and psychological domain variables were assessed via worker interviews, medical records, and administrative databases. Logistic regression analyses identified early predictors of work disability compensation 1 year after claim submission. Significant baseline predictors of 1-year work disability in the final multidomain model were injury severity (rated from medical records), specialty of the first health care provider seen for the injury (obtained from administrative data), and worker-reported physical disability (Roland-Morris disability questionnaire), number of pain sites, "very hectic" job, no offer of a job accommodation (e.g., light duty), and previous injury involving a month or more off work. The model showed excellent ability to discriminate between workers who were/were not disabled at 1 year (area under the receiver operating characteristic curve = 0.88, 95% CI = 0.86-0.90). Among workers with new lost work-time back injury claims, risk factors for chronic disability include radiculopathy, substantial functional disability, and to a lesser extent, more widespread pain and previous injury with extended time off work. The roles of employers and health care providers also seem important, supporting the need to incorporate factors external to the worker in models of the development of chronic disability and in disability prevention efforts.