The story
From clini(cal) + -metrics, by analogy with biometrics, psychometrics, econometrics, etc. Coined by American epidemiologist Alvan Feinstein in a 1982 paper in Circulation.
Etymology from Wiktionary, CC BY-SA 4.0.
clinimetrics
Today it means: A methodological discipline concerned with the development and application of various instruments (indices, rating scales, etc.) to measure symptoms, signs, and other clinical outcomes. Full definition →