The input data files used with SEER*Prep must follow the specific requirements provided in Input File Formats. You may find the following utility programs useful when preparing your input files.
Fix Length
The text files used as input to SEER*Prep must be fixed length. The required record length for each of the supported file formats is given in Input File Format. Your data management software may have an option to output fixed length records. If not, you may use one of two "fixlen" programs made available here.
Programs to create a fixed length version of text files:
- Windows FixLen Executable (EXE, 1.5 MB) (updated 11/2020)
Windows version also supports converting files in CSV format. - SAS FixLen Source Code (SAS, 408 bytes)
- readme.txt (TXT, 2 KB)
Population Data
The following SAS programs can be used to subset the county-level and census-tract level population data prior to using SEER*Prep:
- U.S. County Population Data SAS program (SAS, 2 KB)
- U.S. Census Tract Population Data SAS program (SAS, 2 KB)
