# Questions tagged [survival]

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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### Book suggestions for survival analysis

I'm trying to learn more about survival analysis and I could really use some suggestions for good texts on the topic. I have a fairly strong background in applied statistical analyses (quantitative ...
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### Probabilistic models applied in survival analysis

I am trying to fit some probabilistic models for a survival analysis, that is, considering a parametric approach (I tried to fit the cox regression model, but the proportional hazards assumption was ...
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### Adding a variable's effect (from literature) to an estimated Cox model

I have a Cox model (estimated with coxph), built using "some" variables. There is an extra variable that I have not measured, so it is not in my dataset, but I do know the effect of that ...
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### How to test censoring patterns of two samples agree?

I am not sure I even understood the book. I am reading Applied Survival Analysis by Hosmer, Lemeshow and May's pg 58. The book says "Problems in study design and data collection can lead to ...
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### How to calculate confidence intervals for the scale parameter of a parametric survival model?

I use R code to create the following AFT model survregLogNormal <- survreg(Surv(futime, fustat) ~ ecog.ps + rx, ovarian, dist = "loglogistic") Next, I ...
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### How to compare the effect size of one exposure on different outcomes?

I am modeling the effect of a risk factor on two types of disease by using subdistribution hazard mode (so death is a competing factor for the diseases), when I analyzed for two types of disease ...
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### why is hazard function tending to infinity

How to prove that if h(t) hazard function is failure rate function then integration of h(t) from 0 to infinity is infinity .
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### Test for proportional hazards assumption in coxme model - Error and abortion of R session

I'm trying to do a survival analysis using a mixed-effects cox proportional hazards model in R with coxme. My data is - actually - fairly simple. I followed the survival of insect that were kept in ...
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### Are arguments for regularization/penalties applied by default to the coxph() function in the 'survival' package in R?

I'm reading through the documentation for the 'survival' package in R, pdf link, and as I understand it, there are three methods for applying penalty to the basic Cox regression function: ridge, p-...
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### How to deal with participants that don't last through a treatment?

My study involves repeated measures to compare the effectiveness of two distinct drug formulations at reducing the volume of an abscess, measured at three time-points (one baseline and two follow-ups),...