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Completing Yo r Q alit Completing Your Quality Improvement Plan

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Rare EventsIf you had a bad eventThe number of bad events would havethat occurred thefollowing number oftimes last year...to drop to this level in the coming yearbefore you could say you've made astatistically significant drop% Drop5 0 100%10 3 70%25 13 48%50 32 36%75 53 29%100 74 26%200 163 19%Assumes Poisson distribution of rare events.14

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