Question: For factors that remain, assess the PH assumption using at least two methods, after ensuring that continuous predictors are transformed to be as linear as

For factors that remain, assess the PH assumption using at least two methods, after ensuring that continuous predictors are transformed to be as linear as possible. In addition, for polytomous predictors, derive log cumulative hazard estimates adjusted for continuous predictors that do not assume anything about the relationship between the polytomous factor and survival.

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