Decision Curve Analysis with SAS

This repository contains two SAS macros to generate decison curve anlaysis figures in SAS.

• dca.sas Create a DCA figure for models with binary endpoints
• stdca.sas Create a DCA figure for models with time-to-event endpoints

For detailed vignettes and examples of DCA in action using Stata, R and SAS, visit decisioncurveanalysis.org.

Source the DCA SAS macros with

filename dca url "https://raw.githubusercontent.com/ddsjoberg/dca.sas/main/dca.sas";
filename stdca url "https://raw.githubusercontent.com/ddsjoberg/dca.sas/main/stdca.sas";
%include dca;
%include stdca;

Call the macros with

%DCA(...)
%STDCA(...)

Unit Testing

1. Confirm the directory settings in unit-testing/tests.sas are correct.
2. Run the file unit-testing/tests.sas. This will...
   • Source the current versions of dca.sas and stdca.sas.
   • Create and ODS report of with PROC COMPARE showing the expected results against the obtained results.
3. Confirm the output in the ODS report.

Release History

v0.4.0 (2022-12-28)

• The net interventions avoided figures have new defaults (breaking change):
  • The figure will now include the treat all and treat none reference lines.
  • The nper now defaults to one.

v0.3.0 (2021-11-16)

• Added prevalence= argument to the %DCA() macro. Users working with case-control data can now specify the population prevalence.

• Cleaning up functions so no additional data sets are saved to the work library.

• Added unit testing.

v0.2.1 (2021-06-23)

• Bug fix in %STDCA()

v0.2.0 (2015-02-02)

• Initial release.