249702 Weight Change One Year After Occupational Back Injury in Washington State

Monday, October 31, 2011

Benjamin Keeney, PhC , Orthopaedics, Dartmouth Medical School, Lebanon, NH
Gary M. Franklin, MD, MPH , Environmental and Occupational Health Sciences, University of Washington, Seattle, WA
Thomas Wickizer, PhD , Divsion of Health Services Management and Policy, Ohio State University, Columbus, OH
Judith A. Turner, PhD , Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA
K.C. Gary Chan, PhD , Department of Biostatistics, University of Washington, Seattle, WA
Deborah Fulton-Kehoe, PhD, MPH , Environmental and Occupational Health Sciences, University of Washington, Seattle, WA
Arnold (Butch) De Castro, PhD, MSN/MPH, RN , School of Nursing, University of Washington, Seattle, WA
Back pain is the costliest and most prevalent occupational disorder in the United States, resulting in 101,800,000 annual lost work-days. BMI and weight affect worker injury rates, productivity, claims costs, and quality of life; however, little is known about the impacts of occupational back injury on workers' weight over time. The Washington Workers' Compensation Disability Risk Identification Study Cohort (D-RISC) is a large, population-based sample of workers with back injury claims between 2004 and 2006 with at least 4 days missed from work. In addition to administrative data and medical records, workers were contacted for baseline and 1-year follow-up interviews, including self-reported weight and height. Initial descriptive results indicate that approximately 1,269 (of 1,319 who completed both interviews) workers self-reported weight measures at both interviews. More than a third of injured workers (441, or 34.8%) reported clinically significant weight change (at least 5% of baseline weight) after 1 year. Overall, 616 workers reported any weight gain (48.5%) while 448 (35.3%) reported weight loss. Among injured workers that were not working at 1 year (n=390), weight change had increased significantly using a paired t-test (3.03 lbs, p-value 0.006), while there was no significant change among workers that had returned to work (n=879, 0.21 lbs, p-value 0.64). We will build predictive models for clinically significant BMI and weight change following occupational back injury. A predictive model may be useful in identifying workers that may benefit from additional resources aimed at preventing significant weight gain after injury through population-based prevention interventions.

Learning Areas:
Occupational health and safety
Other professions or practice related to public health
Public health or related research

Learning Objectives:
Describe weight changes after occupational back injury. Differentiate weight change among workers who have and have not returned to work at one year post-injury. Explain clinically significant weight gain among workers with back injuries.

Keywords: Occupational Injury and Death, Weight Management

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am a doctoral candidate in occupational health services and my co-authors are well-regarded in this field of research.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.