The effects of pay for performance on disparities in stroke, hypertension, and coronary heart disease management: interrupted time series study.

PLoS One · 2011 · PMC3240616 · PMID 22194781

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did not reach statistical significanceno p-value reported

The results for level changes in each ethnic group did not reach statistical significance.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.