'SAS' IF Style Data Step Logic for Data Tables // 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.