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9.15.2021 Acute Hospital Utilization, Emergency Department Utilization and Hospitalization for Potentially Preventable Complications May covariance values be rounded before using them in the variance calculation?

No. Do not round covariance values for use in variance calculations. Member-level PPD and PUCD should be unrounded in covariance and variance calculations, although truncation to 10 decimal points is applied, per the previous step. NCQA intends to evaluate truncation and rounding logic throughout intermediate calculations to ensure consistency and reduce potential bias in a future publication release.