Related Experiment Video
Updated: Jun 4, 2026

Signal Acquisition, Score Interpretation, and Economics of a Non-Invasive Point-of-Care Test for Coronary Artery Disease
Published on: August 9, 2024
Is there a cost associated with higher quality?
William O Cleverley1, James O Cleverley
1Cleverley + Associates, Worthington, Ohio, USA. bcleverley@cleverleyassociates.com
Abstract:
An analysis of the relationship between quality and cost using a sample of 3081 Medicare-reimbursed acute care hospitals found that cost appears to increase somewhat with quality improvement. However, an analysis that focused on the top 10 Medicare severity-adjusted DRGs (MS-DRGs) in terms of volume, based on national statistics, found that improving quality can help to reduce costs. An examination of mortality associated with a single MS-DRG found that cost increases steadily as mortality rates increase, supporting a conclusion that poor outcomes lead to greater expenditures.
Related Concept Videos
Testing a Claim about Standard Deviation
The hypothesis testing for the claim of population standard deviation (or variance) requires the data and samples to be random and unbiased. The population distribution also must be normal. There is no specific requirement on the sample size as the estimation is based on the chi-square distribution.
As a first step, the hypothesis (null and alternative) concerning the claim about...
Quality Assurance
Ratio Level of Measurement
A set of data measured using the ratio scale takes care of the ratio problem and provides complete information. Ratio scale data are like interval scale data, except they have a zero point and ratios can be calculated. For...
Quality Control
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
Upsampling
Quality of Water
