Anemia and its Impact on COPD Patients
Author Information
Author(s): Halpern Michael T, Zilberberg Marya D, Schmier Jordana K, Lau Edmund C, Shorr Andrew F
Primary Institution: Exponent
Hypothesis
What are the cost implications of anemia and its association with mortality in chronic obstructive pulmonary disease (COPD)?
Conclusion
Anemia significantly contributes to the costs of care for COPD and is associated with increased mortality.
Supporting Evidence
- 21% of COPD patients had concomitant anemia.
- Anemia was associated with more than double the annual Medicare payments for COPD patients.
- Patients with anemia had a mortality rate of 262 deaths per 1,000 person-years compared to 133 for non-anemic patients.
Takeaway
Anemia is common in people with COPD and makes their health care more expensive and increases their risk of dying.
Methodology
The study analyzed Medicare claims data from 1997 to 2001, comparing costs and outcomes for COPD patients with and without anemia.
Potential Biases
Potential coding bias may have led to underestimation of anemia prevalence.
Limitations
The study is retrospective and may be affected by coding bias and lack of specific measures of disease severity.
Participant Demographics
The cohort included Medicare enrollees, primarily older adults, with 21% having anemia.
Statistical Information
P-Value
p<0.001
Confidence Interval
95% CI: $3,299 to $3,865
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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