Spec. Issue 2006 - Article Summary

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Validation via weight-of-evidence approaches

Michael Balls and Robert Combes
FRAME, Nottingham, UK
Summary
It is not always necessary, or even possible, to conduct a practical laboratory study to establish the validity of tests or testing strategies. A weight-of-evidence approach aims to use already-available information in a structured, systematic, independent and transparent assessment. Crucial aspects include: study management and design; selection of experts without vested interests; collection of data and data quality control; differential weighing of various types of evidence, alone and in combination; evaluation of test performance in terms of reliability and relevance in relation to purpose; publication of outcome; and peer review.

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