Building Critical to Quality Trees helps you to translate critical study needs and quality drivers into measurable outcomes and processes. Initially, this Lean Six Sigma approach serves as a business tool based on customer needs. Still, it is a helpful method of implementing Quality by Design in clinical research.
Within the bounds of risk-based quality management, the utilization of predefined Quality Tolerance Limits (QTLs) is a way to control quality and risk in clinical trials. QTLs identify systematic risks to patients and data integrity at the study level. We've listed the 7 most commonly used QTLs that are applicable to most trials.