How large would the sample size be for a manual control with a population of...

HITRUST provides sampling guidance in theCSF Assessment Methodologyand scoring rubric for manual controls. Sample sizes are determined by the population of items and the control’s frequency. For a population of56 items, the expected sample size is8, following HITRUST’s defined sampling table. This approach is based on statistical sampling principles but simplified for consistent assessor use. The sample must be randomly selected and representative of the entire population to avoid bias. Larger populations require larger sample sizes, but at certain thresholds, the increase is incremental. For example, a population between 26–100 items requires a sample size of 8. This ensures sufficient testing coverage without requiring a full census. Therefore, the correct sample size for 56 items is8.