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Results tagged with survival
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user 413940
Survival analysis models time to event data, typically time to death or failure time. Censored data are a common problem for survival analyses.
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Merging Different Groups for Cox Regression
I have time to event data for subjects from different groups, and I use group features as covariates for cox regression. For example, I have 100 subjects from group A, and 200 subjects from group B, a …
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Dealing with Low variance categorical variables on cox regression
I am fitting a time varying cox model to my survival data, and I remove one arbitrary level from each categories, to create the baseline hazard. I have some low variance categorical variables. …
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Dropping a level of a categorical variable with small number of subjects on cox regression
I am trying to fit a Cox regression model to my time-to event data and have a categorical variable with 5 different levels. I leave one level out as the 'reference'. I also have 2 levels with small nu …
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Time related categorical variable for cox regression
I am trying to fit a Cox regression model to my time-to event data and besides other subject specific variables, I have two specific calendar dates that I want to analyze the effect of. For these two …
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Competing Risks that are not mutually exclusive in Survival Analysis
I have 5 type of events that a subject can experience. However, not all these events are competing with each other: For the events A, B, C, D, E; occurrence of A blocks B from happening. B, D and E pr …
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Multi State Survival Analysis Transition Between States Triggered By different events
I have a state diagram for multistate survival analysis, and between 2 specific states, I have 2 types of transitions triggered by different types of events, i.e, from state 1 to state 2, the transition … How can I account for these transitions in multistate survival analysis? Should I add the event type as a covariate for Cox Regression? …
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Dealing with categorical variables on cox regression
I am trying to fit a Cox regression model to my time-to event data and have a categorical variable with 5 different levels. If I don't leave one of the levels out, then I will have multicollinearity, …
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Lifelines-CoxTimeVaryingFitter for Multistate Survival Analysis
I am new to survival analysis and cox regression, and have limited statistical background. … I have time-to event data for a multistate survival model and I want to fit a cox model for each transition in the state model to figure out influence of different covariates on survival time. …
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