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How fast are hospital prices really rising?
D Dranove1, M Shanley, W D White
1Kellogg School of Management, Northwestern University, Evanston, IL 60201.
Medical Care
|August 1, 1991
Summary
The Consumer Price Index (CPI) for hospital services may overestimate actual healthcare inflation. Discounts negotiated by health plans create a gap between list prices and actual costs, potentially doubling inflation rates.
Area of Science:
- Health Economics
- Healthcare Management
- Price Index Analysis
Background:
- The Consumer Price Index (CPI) hospital services component measures list prices, not actual transaction costs.
- Increasing enrollment in managed care organizations (HMOs, PPOs) leads to negotiated discounts.
- The gap between list price inflation and actual price inflation may be widening.
Purpose of the Study:
- To investigate the existence and magnitude of a gap between hospital list price inflation and actual price inflation.
- To compute parallel indices for list and actual hospital prices.
- To assess the implications for inflation measurement and cost containment strategies.
Main Methods:
- Analysis of hospital price data from California hospitals for fiscal years 1983-1988.
- Computation of parallel Consumer Price Index (CPI) and actual price indices.
- Comparison of inflation rates derived from list prices versus discounted prices.
Main Results:
- Hospital list price inflation significantly exceeded actual price inflation between 1983 and 1988.
- The disparity between list and actual price inflation was substantial, potentially doubling in recent years studied.
- A notable gap exists, indicating that CPI hospital services data may not accurately reflect real healthcare cost inflation.
Conclusions:
- The CPI hospital services component is an inappropriate measure of overall hospital price inflation due to negotiated discounts.
- Managed care discounts create a significant divergence between list and actual healthcare prices.
- Findings impact the evaluation of healthcare inflation and the effectiveness of cost containment strategies.