Cost-Effectiveness of an Electronic Medical Record Based Clinical Decision Support System
Version of Record online: 11 MAY 2012
© Health Research and Educational Trust
Health Services Research
Volume 47, Issue 6, pages 2137–2158, December 2012
How to Cite
Gilmer, T. P., O'Connor, P. J., Sperl-Hillen, J. M., Rush, W. A., Johnson, P. E., Amundson, G. H., Asche, S. E. and Ekstrom, H. L. (2012), Cost-Effectiveness of an Electronic Medical Record Based Clinical Decision Support System. Health Services Research, 47: 2137–2158. doi: 10.1111/j.1475-6773.2012.01427.x
- Issue online: 12 NOV 2012
- Version of Record online: 11 MAY 2012
- NIDDK. Grant Number: DK068314
- Clinical Trials Registration. Grant Number: NCT00272402
Background and Objective
Medical groups have invested billions of dollars in electronic medical records (EMRs), but few studies have examined the cost-effectiveness of EMR-based clinical decision support (CDS). This study examined the cost-effectiveness of EMR-based CDS for adults with diabetes from the perspective of the health care system.
Clinical outcome and cost data from a randomized clinical trial of EMR-based CDS were used as inputs into a diabetes simulation model. The simulation cohort included 1,092 patients with diabetes with A1c above goal at baseline.
The United Kingdom Prospective Diabetes Study Outcomes Model, a validated simulation model of diabetes, was used to evaluate remaining life years, quality-adjusted life years (QALYs), and health care costs over patient lifetimes (40-year time horizon) from the health system perspective.
Patients in the intervention group had significantly lowered A1c (0.26 percent, p = .014) relative to patients in the control arm. Intervention costs were $120 (SE = 45) per patient in the first year and $76 (SE = 45) per patient in the following years. In the base case analysis, EMR-based CDS increased lifetime QALYs by 0.04 (SE = 0.01) and increased lifetime costs by $112 (SE = 660), resulting in an incremental cost-effectiveness ratio of $3,017 per QALY. The cost-effectiveness of EMR-based CDS persisted in one-way, two-way, and probabilistic sensitivity analyses.
Widespread adoption of sophisticated EMR-based CDS has the potential to modestly improve the quality of care for patients with chronic conditions without substantially increasing costs to the health care system.