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Prediction of chronic disability in work-related musculoskeletal disorders: a prospective, population-based study.

Authors
Turner-JA; Franklin-G; Fulton-Kehoe-D; Egan-K; Wickizer-TM; Lymp-JF; Sheppard-L; Kaufman-JD
Source
BMC Public Health 2004 May; 5:14
NIOSHTIC No.
20029459
Abstract
BACKGROUND: Disability associated with work-related musculoskeletal disorders is an increasingly serious societal problem. Although most injured workers return quickly to work, a substantial number do not. The costs of chronic disability to the injured worker, his or her family, employers, and society are enormous. A means of accurate early identification of injured workers at risk for chronic disability could enable these individuals to be targeted for early intervention to promote return to work and normal functioning. The purpose of this study is to develop statistical models that accurately predict chronic work disability from data obtained from administrative databases and worker interviews soon after a work injury. Based on these models, we will develop a brief instrument that could be administered in medical or workers' compensation settings to screen injured workers for chronic disability risk. METHODS: This is a population-based, prospective study. The study population consists of workers who file claims for work-related back injuries or carpal tunnel syndrome (CTS) in Washington State. The Washington State Department of Labor and Industries claims database is reviewed weekly to identify workers with new claims for work-related back injuries and CTS, and these workers are telephoned and invited to participate. Workers who enroll complete a computer-assisted telephone interview at baseline and one year later. The baseline interview assesses sociodemographic, employment-related, biomedical/health care, legal, and psychosocial risk factors. The follow-up interview assesses pain, disability, and work status. The primary outcome is duration of work disability over the year after claim submission, as assessed by administrative data. Secondary outcomes include work disability status at one year, as assessed by both self-report and work disability compensation status (administrative records). A sample size of 1,800 workers with back injuries and 1,200 with CTS will provide adequate statistical power (0.96 for low back and 0.85 for CTS) to predict disability with an alpha of.05 (two-sided) and a hazard ratio of 1.2. Proportional hazards regression models will be constructed to determine the best combination of predictors of work disability duration at one year. Regression models will also be developed for the secondary outcomes.
Keywords
Work-practices; Workers; Injuries; Health-hazards; Health-protection; Health-surveys; Safety-equipment; Safety-measures; Safety-monitoring; Safety-practices; Risk-factors; Job-analysis; Lost-work-days; Back-injuries; Absenteeism; Muscular-disorders; Musculoskeletal-system-disorders; Statistical-analysis; Models
Contact
Departments of Psychiatry & Behavioral Sciences and Rehabilitation Medicine, University of Washington School of Medicine, Box 356560, Seattle, WA, 98195-6560
CODEN
BPHMAJ
Publication Date
20040524
Document Type
Journal Article
Email Address
jturner@u.washington.edu
Funding Type
Grant
Fiscal Year
2004
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-004069
ISSN
1471-2458
Source Name
BMC Public Health
State
WA
Performing Organization
University of Washington
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