Effective data management is crucial for the success of any data-driven project, especially in clinical trials and research. SAS provides a powerful toolkit for managing, cleaning, transforming, and analyzing data. This report presents essential SAS programs that can significantly improve your data management processes. 1. Data Import and Export Managing data often starts with importing datasets from various sources and exporting them for analysis or sharing. SAS offers several procedures to handle different data formats. 1.1. Importing Data from Excel To import data from an Excel file, use the PROC IMPORT procedure. This allows you to easily bring data into SAS from Excel spreadsheets. /* Importing data from an Excel file */ proc import datafile="/path/to/your/file.xlsx" out=mydata dbms=xlsx replace; sheet="Sheet1"; getnames=yes; run; 1.2. Exporting Data to Excel You can also export SAS datasets to Excel using the PROC EXPORT proce...

One of my favorite methods of exporting excel or .csv file is to use the ‘ DEXPORT ’ command-line command. This certainly reduces the amount of typing required to export the SAS dataset. Another interesting point is DEXPORT command works fine in UNIX and PC .   Syntax: dm “ DEXPORT libref.dsn 'filename.xls ' replace ;   "libref" is a library , "dsn" is the name of a SAS data set, and "filename.xls" is the name of the tab delimited text file(excel) being created. If we don’t specify the Libname or it is work then the dataset ‘dsn’ from the WORK directory is exported in a excel format to a specified location. Replace option … replaces the file if it already exists.     Use DIMPORT command-line command to convert/import a tab delimited (excel or .csv etc) into a SAS dataset. Syntax: dm “DIMPORT ‘filename.csv’ exc" replace; DIMPORT command tells SAS to import or convert the tab delimited file (filename.csv) to a SAS dataset named ‘ex...

Reading from Excel Spreadsheets: Microsoft Excel spreadsheets can be read from SAS in several ways. Two of these will be demonstrated here. First, PROC IMPORT allows direct access to Excel files through SAS/Access to PC File Formats or access to Comma-Separated (CSV) files through Base SAS. The second method uses the Excel LIBNAME engine. PROC IMPORT The IMPORT procedure reads from external sources and creates a SAS data set. Two sources are Excel spreadsheets and CSV files. A particular SAS/Access product may be required for certain sources, however. In our example, SAS/Access to PC File Formats is required to read an Excel file, but a CSV file can be accessed with Base SAS. General Syntax for PROC IMPORT: PROC IMPORT DATAFILE=" c:\sas\ego.csv " OUT=jeeshim.egov DBMS=CSV REPLACE; For Excel you use the DATAFILE =”filename” option to specify the Excel file to be read. (The TABLE=”tablename” option would be applicable if you were reading from a database such as Microso...