Provides 'SAS'-style IF/ELSE chains, independent IF rules,
    and DELETE logic for 'data.table', enabling clinical programmers to
    express Study Data Tabulation Model (SDTM) and Analysis Data Model
    (ADaM)-style derivations in familiar SAS-like syntax.
    Methods are informed by clinical data standards described in CDISC
    SDTM and ADaM implementation guides. See
    <https://www.cdisc.org/standards/foundational/sdtm> and
    <https://www.cdisc.org/standards/foundational/adam>.

This is a core implementation of 'SAS' procedures for linear models - GLM, REG, ANOVA, TTEST, FREQ, and UNIVARIATE. Some R packages provide Type II and Type III SS. However, the results of nested and complex designs are often different from those of 'SAS'. Different results do not necessarily mean incorrectness. However, many want the same results as 'SAS'. This package aims to achieve that.
             Reference: Littell RC, Stroup WW, Freund RJ (2002, ISBN:0-471-22174-0).

Settings and functions to extend the 'knitr' 'SAS' engine.

Data sets and sample lmer analyses corresponding
  to the examples in Littell, Milliken, Stroup and Wolfinger
  (1996), "SAS System for Mixed Models", SAS Institute.

Use R and 'SAS' within reproducible multilingual 'quarto'
    documents. Run 'SAS' code blocks interactively, send data back and
    forth between 'SAS' and R, and render 'SAS' output within 'quarto'
    documents. 'SAS' connections are established through a combination of
    'SASPy' and 'reticulate'.

Provides a 'SAS' interface, through
    'SASPy'(<https://sassoftware.github.io/saspy/>) and
    'reticulate'(<https://rstudio.github.io/reticulate/>).  This package
    helps you create 'SAS' sessions, execute 'SAS' code in remote 'SAS'
    servers, retrieve execution results and log, and exchange datasets
    between 'SAS' and 'R'.  It also helps you to install 'SASPy' and
    create a configuration file for the connection. Please review the
    'SASPy' license file as instructed so that you comply with its
    separate and independent license.