The Incidence of Primary Hip Osteoarthritis in Active Duty US Military Servicemembers

Abstract

Objective. Although multiple studies have reported the prevalence of primary hip osteoarthritis (OA), little has been reported on incidence rates of hip OA. We sought to determine the incidence rate and demographic risk factors of hip OA in an ethnically diverse and physically active population of US military servicemembers. Methods. A query was performed using the US Defense Medical Epidemiology Database for the International Classification of Diseases, Ninth Revision, Clinical Modification code for hip OA (715.95). Multivariate Poisson regression analysis was used to estimate the rate of hip OA per 100,000 person-years, controlling for sex, race, age, rank, and service. Results. The overall unadjusted incidence rate of hip OA was 35 per 100,000 person-years. Women, compared with men, had a significantly increased adjusted incidence rate ratio for hip OA of 1.87 (95% confidence interval [95% CI] 1.73-2.01). The adjusted incidence rate ratio for black servicemembers when compared with white servicemembers was 1.32 (95% CI 1.23-1.41). The adjusted incidence rate ratio for the > or = 40-year-old age group compared with the 20-year-old group was 22.21 (95% CI 17.54-28.14). With junior officers as the referent category, junior enlisted, senior enlisted, and senior officers rank groups had a significantly increased adjusted incidence rate ratio for hip OA. With the Air Force as the referent category, each service had a significantly increased adjusted incidence rate ratio for hip OA. Conclusion. Female sex; black race; age >40 years; junior enlisted, senior enlisted, and senior officer rank groups; and military service in the Navy, Army, or Marines were all risk factors for hip OA.

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Document Details

Document Type
Technical Report
Publication Date
Apr 15, 2009
Accession Number
ADA514765

Entities

People

  • Brett D. Owens
  • Dannielle L. Scher
  • Philip J. Belmont Jr.
  • Sally Mountcastle

Organizations

  • William Beaumont Army Medical Center

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Active Duty
  • Age Groups
  • Air Force
  • Arthritis
  • Bone Diseases
  • Cartilage
  • Data Analysis
  • Databases
  • Diseases And Disorders
  • Health
  • Health Care
  • Health Care Facilities
  • Health Services
  • Medical Personnel
  • Regression Analysis
  • Risk Factors
  • Statistical Analysis

Fields of Study

  • Medicine

Readers

  • Gender and Food Studies
  • Military Leadership and Professional Education.
  • Trauma or Military Medicine