11.07.2015 Views

Cox regression IV. Competing risks.

Cox regression IV. Competing risks.

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u n i v e r s i t y o f c o p e n h a g e nd e p a r t m e n t o f b i o s t a t i s t i c sKumulativ incidens baseret på Kaplan-MeierIllustrativt eksempel:10 patienter, 2 konkurrerende årsager: Recidiv (R) ogbehandlingsrelateret død (D):Follow-up (+ er censurering):R + R D + R D D R +0 1 2 3 4 5 6 7 8 9 10TidKM når død betragtes som censurering (antal under risiko /antal recidiver) :0 1 2 3 4 5 6 7 8 9 101 × 91010 9 8 7 6 5 4 3 2 11 0 1 0 0 1 0 0 1 0×78×= 1 0.9 0.7875 0.63 0.31531 / 4745×12✲✲

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