Assessing the proportional hazard (PH) / proportionality assumption of a cox regression model
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Dear all
I have fitted a cox proportional hazard regression model (coxphit) for some data. I would like to assess the proportional hazard / proportionality of that model and data in matlab. I have plotted the scaled schroedinger residuals from the stats section against the time variable.
stats =
covb: 0.0502
beta: -0.7739
se: 0.2240
z: -3.4555
p: 5.4926e-04
csres: [237×1 double]
devres: [237×1 double]
martres: [237×1 double]
schres: [237×1 double]
sschres: [237×1 double]
scores: [237×1 double]
sscores: [237×1 double]
I struggle with the interpretation of that data and figure.
Any help on how to proceed would be appreciated.
Thank you
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