Objective: To introduce a new graphical tool that improves the process of making decisions about method performance.
Data sources: Scientific literature, mathematical models, and the author's experience.
Study selection: Not applicable.
Data extraction: Not applicable.
Data synthesis: Relationship to charts of operating specifications (OPSpecs charts) provides guidance for classification of performance as poor, marginal, good, or excellent.
Conclusion: Objective decisions on the performance of methods can be made quickly and easily with the aid of a Method Evaluation Decision Chart.