This terminology is used in the MDR in reference to clinical data planning, evaluation and conclusions12. Clinical evaluations must follow a “defined and methodologically sound procedure”13, for which expectations of scientific validity are implicit. Embedded in the term ‘scientific validity’ are concepts including adequacy of study design and controls for bias, appropriateness and relevance of research questions, adequacy of sample sizes and statistical analyses, completeness of data, adequacy of follow up period, and appropriateness of conclusions on the basis of objective evidence. Section 9.3.1 of MEDDEV 2.7/1 rev. 4 provides guidance for the evaluation of methodological quality and scientific validity under the MDD/AIMDD which are equally valid under the MDR which can be considered to apply when referencing ‘Scientific validity’ in this guidance.
[Definition according to MDCG 2020-6 No. 1.2]