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Quality Improvement

Choosing the right improvement metric

Donald E. Lighter, MD·Jan 5, 2026·4 min read

Why outcome measures beat activity measures in healthcare improvement programs.

The wrong metric will quietly destroy an improvement program. Teams will hit the number, leadership will declare victory, and the underlying problem will continue unchecked. The discipline of choosing the right metric is one of the most underrated skills in quality improvement.

Activity vs. outcome

Counting the number of huddles held, audits completed, or training hours delivered is easy — and almost always misleading. These are activity measures. They tell you whether work happened, not whether it mattered. Outcome measures — readmission rates, harm events, patient-reported outcomes — are harder to move and harder to game.

A simple test

  • Would a patient care if this number changed?
  • Can the team influence it within a meaningful time frame?
  • Is there a balancing measure to catch unintended consequences?

If you can answer yes to all three, you have a metric worth tracking. If not, keep looking.