Incidence and prevalence of adult systemic lupus erythematosus in a large US managed-care population

Lupus. 2013 Jan;22(1):99-105. doi: 10.1177/0961203312463110. Epub 2012 Oct 5.

Abstract

Objective: The objective of this paper is to determine the incidence and prevalence of adult systemic lupus erythematosus (SLE) in a large US managed-care population.

Methods: Subject inclusion in the incidence cohort required a medical claim with an SLE diagnosis and a service date from 2003 to 2008 that satisfied the following criteria: 1) ≥18 years on service date; 2) continuously enrolled for 24 months before and 12 months after service date; 3) in the 12 months after service date, ≥ one inpatient claim or ≥ two office or ER visits with an SLE diagnosis; 4) no SLE diagnosis 24 months prior to service date; and 5) no SLE medications 12 months prior to service date. Prevalence cohort subjects were identified using a similar algorithm and were not required to satisfy criteria 4) and 5).

Results: A total of 1,557 subjects were included in the incidence cohort, and 15,396 were included in the prevalence cohort. The overall age- and gender-adjusted SLE incidence rate (2003-2008) was 7.22 cases per 100,000 person-years. The annual prevalence of SLE (per 100,000 individuals) varied from 81.07 in 2003 to 102.94 in 2008.

Conclusion: The SLE incidence in this large managed-care plan with geographic diversity was slightly higher than previous estimates, and the prevalence was within the range of previous estimates.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Age Distribution
  • Aged
  • Chi-Square Distribution
  • Female
  • Humans
  • Incidence
  • Likelihood Functions
  • Linear Models
  • Lupus Erythematosus, Systemic / diagnosis
  • Lupus Erythematosus, Systemic / epidemiology*
  • Male
  • Managed Care Programs*
  • Middle Aged
  • Prevalence
  • Sex Distribution
  • Time Factors
  • United States / epidemiology
  • Young Adult