Challenges of verifying CAPA effectiveness for infrequent quality failures
Distinguishing corrective action implementation from demonstrated CAPA effectiveness
Selecting alternative effectiveness measures when recurrence data is insufficient
Using leading indicators to verify corrective control performance
Interpreting statistical confidence and limitations of small datasets
Establishing risk-based monitoring periods and effectiveness acceptance criteria
Evaluating intermittent failures and corrective actions with delayed outcomes
Justifying CAPA closure when effectiveness evidence remains limited