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Glossary

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Opportunity for Improvement
Opportunity for improvement is when data demonstrate considerable variation or overall, less-than-optimal performance, in the quality of care across providers, and/or there are disparities in care across population groups.

Outcome Measure
An outcome measure is a measure that focuses on the health status of a patient (or change in health status) resulting from healthcare – desirable or adverse.

Overfitting
Overfitting a model is when a statistical model begins to describe the random error in the data rather than the relationships between variables. This occurs when the model is too complex. In regression analysis, overfitting can produce misleading R2 values, regression coefficients, and p-values (Frost, n.d. ).