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Longitudinal assessment of health status and disability among workers enrolled in a prospective two-year study in Washington State

Colleen Daly, MPH1, Thomas M. Wickizer, PhD1, Martha Perla, MPA1, and Gary F. Franklin, MD, MPH2. (1) Department of Health Services, University of Washington, Box 357660, Seattle, WA 98195-7660, 206:616-2983, cdaly@u.washington.edu, (2) Department of Environmental Health, University of Washington, Box 357660, Seattle, WA 98040

A two-year prospective study, conducted between 1996-1998, assessed change in disability burden among injured workers in Washington State. A total of 1,313 workers who experienced occupationally related injuries or illnesses between April 1995 and June 1996 were interviewed by telephone at 6 weeks after injury regarding their health outcomes as assessed through the SF-36, the Health Assessment Questionnaire (HAQ), and the Satisfaction with Quality of Life (QOL) instruments. Workers whose injuries resulted in four or more lost work days (n=372) were also interviewed at 6 months and 2 years after injury using similar surveys. We examined patterns of disability 6 weeks, 6 months and 2 years after injury, among workers who returned to work, as measured by self-reported health status indicators. Two years after injury, 90% of workers returned to work, but 27% of those workers reported missing additional days due to their injury. There was little difference in percentage of workers (35%) reporting at 6 weeks or 6 months that pain interfered with their work, but significantly (p<.0001) fewer workers reported pain interfering with their job at 2 years after injury (7%). About 25% of workers reported a SF-36 physical functioning score below 50 (moderate), at both 6 months and 2 years. Among workers who return to work after injury, a measurable portion continued to experience some health problems. Return to work provides a valuable measure for evaluative studies and other analyses but may be limited as an outcome measure. Assessing health status of workers who return to work, if feasible, provides a useful complement to measuring only return to work.

Learning Objectives:

Presenting author's disclosure statement:
I do not have any significant financial interest/arrangement or affiliation with any organization/institution whose products or services are being discussed in this session.

Occupational Health Services: Programs and Research

The 132nd Annual Meeting (November 6-10, 2004) of APHA