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Results for interval censored
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1 vote
1 answer
255 views

Assessment of interval-censored survival models

How can I evaluate a survival model made for interval-censored data? I'm building my models in icenReg, which only allows you to check for whether the proporitional hazards assumption is satisfied. … Harell's C index and Somers' Dxy were my first choices, but I can't find a function in R to calculate it for interval-censored data. …
Wojty's user avatar
  • 155
1 vote
0 answers
136 views

Bootstrapping to address interval censored data

I am trying to run a cox proportional hazards model on data that is interval-censored (and I guess right censored). … 0.25164955 -0.11390303 0.03152995 So the approximation of the standard error from the bootstrap is 0.75 which is right about in line, and the median of the draws comes close to the estimated coef from an interval-censored
rprog's user avatar
  • 111
12 votes
2 answers
7k views

Interval censored Cox proportional hazards model in R

Given interval censored survival times, how do I perform an interval censored Cox PH model in R? An rseek search turns up the package intcox, which no longer exists in the R repository. … I'm almost positive the coxph function in the survival package cannot handle interval censored survival data. Also, I don't want to impute the data and then use the coxph function. …
wcampbell's user avatar
  • 2,217
1 vote
0 answers
63 views

mean and MSE of Interval censored data

I have been handed data that is interval censored where left censoring is limit of detection and right censoring is saturation of the assay. …
Bryan's user avatar
  • 1,291
1 vote
0 answers
67 views

limit of detection (interval censored) CI

My data consists of several varibales, some of which are interval censored due to machine limit of detection. …
Miki's user avatar
  • 11
2 votes
0 answers
222 views

Mean of an interval censored random variable

It is likely that I am incorrect terminology here, but I am trying to compute a "mean" of an interval censored random variable. … Here is an example where: 1. a random sample from the standard normal distribution is discretized to create an interval censored random sample; 2. the marginal probability distribution of the sample is …
tchakravarty's user avatar
  • 9,032
0 votes
1 answer
800 views

Interval Censored data for WeibullFitter in Lifelines python module [closed]

I am getting different answer using lifelines module for interval censored data fitting using WeibullFitter() function. … wf.print_summary() Actual answer from Reliasoft is lambda_ = 51248, rho_ = 0.97 whereas above code using lifelines v0.24.5 is giving me lambda_ = 6447 and rho_=0.21 The last row in data is a right censored
user283479's user avatar
3 votes
1 answer
680 views

Bayesian inference MCMC model for interval censored data

I have interval censored data for incubation period and I suppose that the exact time Ti included in each interval of the data [L;U] follows a lognormal distribution (mu,sigma2). …
Georges Harendt's user avatar
1 vote
1 answer
392 views

Error metric for cross-validation on interval-censored data?

In this case, the interval-censored data is collected as a specific check-time and then a boolean. … Most survival libraries or other statistical libraries require interval-censored to be in interval format. …
gwern's user avatar
  • 415
1 vote
0 answers
163 views

How to fit data with an interval-censored explanatory variable?

The only problem is that this age is interval-censored - that is, the age is an estimate with a range between T(L) < U < T(R) where the true age U is some estimate between the left and right values. … Any suggestions on how to handle interval-censored explanatory data when fitting data to a logarithmic (or any) model such as the one described above. …
Chris Wolfe's user avatar
3 votes
1 answer
164 views

Is my data interval-censored data or discrete-time data?

As I understood, if the data are not collected continuously, the researcher can use survival analysis for interval-censored data, and if some data have the same time intervals, then the researcher can … Or is it more appropriate to use interval-censored survival analysis? If I can use the method for discrete-time data, then is it okay to set the time interval to 1 month? …
Han's user avatar
  • 31
2 votes
1 answer
197 views

Is there any repository with interval censored time-to-event datasets?

In particular, I need interval censored with a cure fraction data. This kind is actually popular in medicine and clinical researches, but I'm having trouble finding them for analysis. … Interval censored consists in data where the time of an event is not directly observed, but it's known to belong to an interval (usually between two inspection points). …
jbrettas's user avatar
  • 173
3 votes
0 answers
573 views

How to use Cox proportional hazards model in interval-censored data with time-dependent vari...

I have survival data (n=156) which, in about half of the observations, is right-censored or interval-censored. … I'm am using R to do the analysis and I know I can use intcox() and survfit() to deal with interval-censored data. …
JMarcelino's user avatar
7 votes
1 answer
2k views

interval censored survival analysis with time dependent covariates

However, the data seems to be interval censored, since exact time of death is not observed. I just know that death occurred before 2006, between 2006 and 2008 or 2008 and 2011. … I also have time-dependent covariates such as proportion elephant damage for each census interval. Is there an R package for conducting interval-based CoxPH with time dependent covariates? …
user_ada's user avatar
0 votes
0 answers
159 views

Survival analysis for interval censored data using deep learning

Therefore, my data is interval-censored. … Is deep learning even bothered by interval censoring? …
Wojty's user avatar
  • 155

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