SASXportFileIterator

SAS XPT file reader

SAS XPT (SAS Transport File) is a standardized file format primarily used for transferring data between different SAS software versions and systems, particularly in regulated environments like clinical trials. Here are the key aspects based on the search results:

1. Core Purpose and Functionality

XPT files enable cross-version compatibility for SAS datasets, resolving issues when data is shared between different SAS installations (e.g., SAS 9 and SAS Viya). This ensures seamless data exchange without version conflicts .

2. Structure and Naming Conventions

• Each XPT file corresponds to a single dataset.
• The dataset name must match the XPT filename exactly.
• Files use a standardized extension (e.g., .xpt), as specified in regulatory guidelines like the Drug Clinical Trial Data Submission Guideline .

3. Regulatory and Industry Applications

XPT is the mandated format for submitting clinical trial data to regulatory agencies (e.g., FDA, NMPA). Its structured format ensures data integrity and consistency during reviews .

4. Interoperability with Other Tools

Beyond SAS, XPT files can be processed in other programming environments. For example, in R, the Hmisc package's sasxport.get function imports XPT data for analysis, demonstrating cross-platform utility .

5. Key Advantages

• Standardization: Uniform structure simplifies data validation and regulatory submissions.
• Compatibility: Eliminates barriers between SAS versions and external systems.
• Efficiency: Streamlines data transfer in large-scale studies (e.g., pharmaceutical trials) .