CondiS

CondiS imputes censored survival times by sampling from their conditional distribution to enable the use of complete datasets in machine-learning-based survival analysis.


Key Features:

  • Censoring Imputation: Imputes censored survival times by drawing from their conditional distribution given the observed portion of each subject's data.
  • Incorporation of Covariates (CondiS-X): Extends imputation by conditioning on additional covariate information to refine imputed survival times.
  • Prediction for New Patients: Produces predicted survival times for newly provided patient records using the same conditional imputation framework.

Scientific Applications:

  • Survival Analysis with Censoring: Enables analysis of datasets containing right-censored survival times by providing complete-event time estimates.
  • Machine-Learning Model Training: Facilitates training and evaluation of machine-learning prognostic models on datasets after imputation of censored values.
  • Personalized Prognosis: Supports individualized survival time prediction by incorporating patient-specific covariates into the imputation process.

Methodology:

Imputation of censored survival times by sampling from their conditional distribution given observed data, with optional conditioning on covariates (CondiS-X) to generate predictions for new patients.

Topics

Details

License:
Not licensed
Cost:
Free of charge
Tool Type:
web application
Operating Systems:
Mac, Linux, Windows
Programming Languages:
R
Added:
9/30/2022
Last Updated:
11/24/2024

Operations

Data Inputs & Outputs

Imputation

Publications

Wang Y, Flowers CR, Li Z, Huang X. CondiS web app: imputation of censored lifetimes for machine learning-based survival analysis. Bioinformatics. 2022;38(17):4252-4254. doi:10.1093/bioinformatics/btac461. PMID:35801895. PMCID:PMC9438949.

PMID: 35801895
PMCID: PMC9438949
Funding: - Cancer Prevention and Research Institute of Texas: RR190079 - NIH: R03CA270725