Summary:

This app allows you to visualize and summarize survival data. The user uploads a survival dataset according to the specifications provided, and a Kaplan-Meier plot with summary statistics will be created automatically.

Details and Uses:

The plots and summary statistics provided in this app can be downloaded and used for publications, presentations, or simply for internal reference. Visualizing survival or time to event data can be time consuming to set up. This app will take your formatted data and automatically create high quality graphs. The user has the ability to choose the time (days, weeks, months, or years), add group variables, and choose whether to include 95% confidence intervals. There are other stylistic choices including axis titles, color scheme, and download quality. The number at risk will be summarized below the graph, and median survival time is provided within each strata.

Disclaimer:

We do not take responsibility for any misuse or misinterpretation of this application or the results produced.

References:

Therneau T (2022). A Package for Survival Analysis in R. R package version 3.3-1, https://CRAN.R-project.org/package=survival.

Alboukadel Kassambara, Marcin Kosinski and Przemyslaw Biecek (2021). survminer: Drawing Survival Curves using 'ggplot2'. R package version 0.4.9. https://CRAN.R-project.org/package=survminer

Version 1.0
Developed by
Julia Thompson

Description of Columns:

Data can be in .xlsx, .xls, .txt, .tsv, or .csv. Please remove any bold font or underlines from your file to ensure it is read in correctly.

Start Date Variable:

This variable gives the start date. It must be in valid date format. Accepted formats include: MM/DD/YYYY, MM/DD/YY, YYYY/MM/DD, MM-DD-YYYY, MM-DD-YY, YYYY-MM-DD

Stop Date Variable:

This variable gives the stop date. This should be the event date if they had an event, and the last follow up date if they did not have an event (last known event free day, i.e. censoring date). It must be in valid date format. Accepted formats include: MM/DD/YYYY, MM/DD/YY, YYYY/MM/DD, MM-DD-YYYY, MM-DD-YY, YYYY-MM-DD

Event Indicator Variable:

This variable indicates whether the person had an event or was censored. It should be numeric 0/1 (1 = event) or 1/2 (2 = event)

Group/Treatment Variable:

This variable is optional. It gives the group identifier (ex: placebo vs drug) and can be numeric or character. It can be up to 5 groups, and the variable levels in your dataset will be what appear on the plot.

Below is a sample data set that satisfies the above criteria. This data can be downloaded here and used as a sample in the Data Upload and Kaplan Meier Curve sections.

Your Data:


Descriptive Statistics


Summary Table


Median Survival Time