Monday, April 7, 2008

Updates to CPES Data Files

Dear CPES Data User:
Our records indicate that you have downloaded data from the Collaborative Psychiatric Epidemiology Surveys (CPES) Web site. We want to let you know that revised and corrected CPES data are now available, and older version should no longer be used.
Over the past six months, the staffs of the three projects that comprise CPES have continued to work with these data, cleaning discrepancies, updating algorithms, and identifying additional variables that can be harmonized. They have created new versions of the CPES files that contain thousands of these types of changes, many at the cell level. Many of these changes represent errors in the original data; therefore previous versions of the CPES file are obsolete and should not be used. The data producers were careful not to change any variable names so that you can use previously-developed code to run against these corrected and updated files to determine if any of these changes impact your analysis.
We want to especially alert previous users of NCS-R. Here, numerous wording errors and problems with how missing data were handled in the original NCS-R releases were identified and corrected. Again, the version of NCS-R in the newest release of CPES (released today) should be used instead of any previous NCS-R releases.
We apologize for the inconvenience this may cause. Please contact ICPSR User Support at netmail@icpsr.umich.edu if you have any questions or concerns.
Please see the CPES Data Processing Notes for updated lists of recoded and dropped variables.
Best Regards,
ICPSR User Support

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