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 incidensI competing <strong>risks</strong> beskriver vi data ved de kumulative incidenserP 1 (t) = P(T ≤ t, død af årsag 1)P 2 (t) = P(T ≤ t, død af årsag 2)· · ·P k (t) = P(T ≤ t, død af årsag k)hvorved overlevelsen S bliverS(t) = 1 − P 1 (t) − · · · − P k (t).29 / 47

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