Using SPSS Data in SUDAAN

1: Can I use SUDAAN to analyze my SPSS data?

2: How can I get my results back into SPSS for further analysis?

3: What versions of SPSS will work with SUDAAN?

<Return to TOP>

1: Can I use SUDAAN to analyze my SPSS data?

Yes! The Standalone version of SUDAAN Release 7.5 and above on PCs and Solaris can read SPSS data files. Thus, you can use SPSS to manage your data files and easily use SUDAAN to analyze your SPSS data sets. With SUDAAN, you can analyze your SPSS data sets while properly accounting for the complex sampling plan used to collect your data. SUDAAN allows you to apply survey data analysis methods, generalized estimating equations (GEE), linear regression, multinomial logistic regression, log-linear regression for count data, survival analysis (Cox regression) and descriptive statistics, all for cluster-correlated or longitudinal data, which are not available directly from SPSS.

<Return to TOP>

2: How can I get my results back into SPSS for further analysis?

Beginning with Release 8.0.0 of SUDAAN, Standalone PC versions of SUDAAN can write SPSS data sets. Simply specify FILETYPE=SPSS on the OUTPUT statement. Thus you can directly import your SUDAAN results into SPSS for further analysis. Standalone Solaris users of SUDAAN will need to create a text output file (FILETYPE=ASCII) and then import this into SPSS.

<Return to TOP>

3: What versions of SPSS will work with SUDAAN?

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 10 of SUDAAN support reading and writing of SPSS data through Version 17 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.

<Return to TOP>