What is proportional sampling built around?

Proportional sampling is primarily built around high frequency items. This methodology focuses on selecting samples based on the frequency of claims or services provided. By emphasizing high frequency items, auditors can ensure that the sampling reflects the most common practices and encounters within a healthcare setting. This approach allows for a more effective and efficient audit process, as it targets areas where there may be a higher risk of error or compliance issues.

In contrast, randomly chosen services do not specifically target high activity areas, potentially diluting the focus on the aspects of care that most often yield discrepancies. Averages of small sample groups may not accurately represent the broader patient population and could miss the nuances of frequent service interactions. Likewise, including all services regardless of frequency might dilute the significance of the high frequency items, making it less effective for identifying potential areas for improvement or investigation in the audit process. Thus, focusing on high frequency items makes proportional sampling a targeted and strategic approach in medical auditing.