Calculations were performed using the SAS software package (SAS™ Version 9.1., SAS Institute Inc., Cary, USA).
This was achieved using the SAS software package (SAS Institute Inc., Cary, NC, USA) and code developed by JM specifically for this task, similar to the program Lexis.sas by Carstensen (2007).
The primary analysis (sequential test) was performed using the SAS software (SAS® software, version 9.2, for Windows (SAS Institute, Cary, NC, USA)).
All analyses were performed using the sas statistical package (version 9.1 for Windows; SAS institute, Cary, NC, USA).
Data were analysed using the SAS statistical software package (SAS/STAT version 8, SAS Institute, Cary, NC, USA).
Data was analysed using the SAS-8.2 statistical software package (SAS Institute, Inc., Cary, NC, USA).
The statistical analyses were done using the SAS-Enterprise and SAS-JMP software.
For visualization we use the OpenDX package.
Use the packages for directions.
Use the packages for restrictions.
