Cox regression IV. Competing risks.
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 sMartingal residualerVi definerer en respons for hvert individ i vedog den forventede værdi vedΛ i (t) =N i (t) = I(T i ≥ t)∫ t0λ 0 (t) exp(β 1 X i1 + · · · + β p X ip )= Λ 0 (t) exp(β 1 X i1 + · · · + β p X ip )og sammenligner disse i martingal residualetM i (t) = N i (t) − Λ 0 (t) exp(β 1 X i1 + · · · + β p X ip ).Hvis <strong>Cox</strong>-modellen er korrekt vil disse residualer havemiddelværdi 0.9 / 47
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