[R] [R-pkgs] gsDesign 3.6.0 is released

[Nan Xiao]

Dear all,

I'm excited to announce that a new version of gsDesign (3.6.0) is now on CRAN (https://cran.r-project.org/package=gsDesign). gsDesign supports group sequential clinical trial design, largely as presented in Jennison and Turnbull (2000).

The 3.6.0 update introduces some significant new features and enhancements:

- New gsSurvCalendar() function to enable group sequential design for time-to-event outcomes using calendar timing of interim analysis specification.
- toInteger() and print.gsSurv() improvements for integer sample size and event count.
- toBinomialExact() and gsBinomialExact() now have improved error checking in bound computations, error messages, and documentation.
- New as_rtf() method for gsBinomialExact() objects to support RTF table outputs.

We have also updated the gsDesign Shiny app to 2023.11.0. This version supports the new key features added in gsDesign 3.5.0 and 3.6.0.

For the complete list of updates, please see the announcement: https://keaven.github.io/blog/gsdesign-3-6-0/.

Best regards,
-Nan

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