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A small number of errors were detected in the 2008 ACS internal microdata file, leading to errors in the 2008 ACS 1-year PUMS files and the 2006-2008 ACS 3-year PUMS files. The 2008 ACS 1-year PUMS and the 2006-2008 ACS 3-year PUMS files were corrected to the extent they could be without causing a risk of disclosure.

The following housing variables were corrected: telephone service (TEL), number of rooms (RMSP), number of bedrooms (BDSP), kitchen facilities (KIT), refrigerator (REFR), and their respective allocation flags. For more detail on these errors, see Errata Notes #53 and #54. The "speaking a language other than English at home" (HHL) variable was also corrected due to the editing error referred to in Errata Note #61.

In addition, on the 2006-2008 3-year PUMS housing unit-level files, the variable FMVYP has been renamed FMVP so that it is consistent with the documentation and previous files.

For more details on how the corrections were made, see the User Note titled "The Correction and Re-release of the 2008 ACS 1-year and 2006-2008 ACS 3-year Public Use Microdata Sample (PUMS) Files."

Previous notes about this error were posted November 18, 2010 (see below).

Additional documentation on changes made in the ACS PUMS files re-released in 2009 and 2010

Five of the ACS PUMS files were re-released in 2009 and 2010 to address a known problem with the AGE variable. The Errata Notes accompanying these releases were Note 50 (for the 2006 1-year PUMS) and Note 65 (for the 2003, 2004, and 2005 1-year PUMS, and the 2005-2007 3-year PUMS). Notes 50 and 65 discuss edits only to the AGE variable and--in the case of the 2005-2007 3-year file--the SOCP, ADJINC, and ADJHSG variables.

The original notes did not make clear that the re-released files also include numerous other minor corrections. This User Note documents the additional changes made to the re-released PUMS files. In all cases, the additional changes were improvements that provided additional detail or corrected for small errors discovered in the original releases.

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