
BC Advantage - 2026 Issue 4
The Importance of Statistical Significance
Information provided below is a basic overview of audit sampling used when Auditing for Compliance—specifically chart or billing audits. It is not intended as comprehensive, legal, or consulting advice. Introduction A statistically significant chart audit in healthcare is a structured, randomized review of medical records designed to project findings onto an entire population of claims (the "universe") with measurable reliability. The Office of Inspector General (OIG) states that these audits must be random, unbiased, and sufficiently large to be representative of the population. A common misconception is that a fixed percentage (e.g., 10%) of charts is always...
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