Reliability
Reliability means a measure of the fraction of the variation among the observed measure values that is due to real differences in quality rather than random variation (noise); it is reflected on a scale from 0 (all differences in plan performance measure scores are due to measurement error) to 1 (the difference in plan performance scores is attributable to real differences in performance).
Source
42 CFR § 423.182
Scoping language
Definitions. In this subpart the following terms have the meanings: