Economic burden of patients with anemia in selected diseases

Value Health. 2005 Nov-Dec;8(6):629-38. doi: 10.1111/j.1524-4733.2005.00058.x.

Abstract

Objective: To examine the economic impact of patients with anemia in selected diseases.

Methods: A retrospective cohort design was used to estimate the differences in costs between anemic and nonanemic patients. The analysis used administrative claims data (1999-2001) from a US population to assess direct costs and disability and productivity data (1997-2001) to estimate indirect costs. Adult patients with a diagnosis of rheumatoid arthritis (RA), inflammatory bowel disease (IBD), chronic obstructive pulmonary disease (COPD), chronic kidney disease (CKD), cancer, or congestive heart failure (CHF) were identified. Costs were estimated using a generalized linear model, adjusting for age, sex, comorbidities, and disease severity. The adjustment variables for disease severity were based on ICD-9, HCPCS, or pharmacy codes. These costs were projected to a 1-million-member, similar population.

Results: The percentage of anemia patients varied among conditions (6.9-26.1%); the CKD population had the highest prevalence. CKD anemic patients incurred the greatest average annual direct costs ($78,209), followed by CHF ($72,078) and cancer ($60,447). After adjusting for baseline characteristics including severity, the difference in direct costs between anemic and nonanemic patients decreased for all diseases; CHF patients incurred the greatest adjusted cost difference between anemic and nonanemic ($29,511), followed by CKD ($20,529) and cancer ($18,418). Unmeasured severity and coding bias may account for a portion of the differences in the adjusted cost.

Conclusion: Anemia may substantially increase health-care costs at a level that is economically very relevant, despite the fact that these patients may comprise only one tenth of the overall anemic population.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Anemia / complications
  • Anemia / economics*
  • Arthritis, Rheumatoid / complications
  • Arthritis, Rheumatoid / economics
  • Comorbidity
  • Cost of Illness*
  • Cross-Sectional Studies
  • Databases as Topic
  • Efficiency
  • Female
  • Health Care Costs / statistics & numerical data*
  • Health Expenditures / statistics & numerical data
  • Heart Failure / complications
  • Heart Failure / economics
  • Humans
  • Inflammatory Bowel Diseases / complications
  • Inflammatory Bowel Diseases / economics
  • Kidney Failure, Chronic / complications
  • Kidney Failure, Chronic / economics
  • Male
  • Managed Care Programs / economics*
  • Middle Aged
  • Models, Econometric
  • Neoplasms / complications
  • Neoplasms / economics
  • Pulmonary Disease, Chronic Obstructive / complications
  • Pulmonary Disease, Chronic Obstructive / economics
  • Retrospective Studies
  • United States