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Standalone SUDAAN (versions 7.5 and later) can read data sets from SPSS Windows Versions 5.x, and above. Beginning with Release 8.0, standalone PC versions of SUDAAN can also write SPSS Windows data sets. No documentation files are required, although SUDAAN allows you to supply a LEVEL file for labeling the levels of categorical variables. Indicate to SUDAAN that your input and/or output data are an SPSS data set by using the FILETYPE=SPSS parameter on the PROC and OUTPUT statements.
SUDAAN is dependent on the SPSS-supplied SPSSIO32.DLL executable file and SPSSIO32.LIB library file for the routines which read and write the SPSS data files. The versions of these files linked with Release 9.0 of SUDAAN support reading and writing of SPSS data through Version 12 of SPSS. They may or may not support reading of higher numbered versions of SPSS data in the future. If your release of SUDAAN is unable to read your SPSS data set, try saving it from SPSS as an earlier version file type before using it in SUDAAN.