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Re: 2001 National dataset

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Scott Susin wrote:
>>There is no state variable on the AHS national file, due to confidentiality restrictions. For example, if state were identified it could be combined with SMSA to identify areas that are too small to meet the Census Bureau's confidentiality test.<<

To extend Scott's explanation a bit, the STATE variable is found only on the metro survey datasets. In most cases, metro survey respondents are assigned to a ZONE that is contained in a single state. Thus, STATE does not reveal any additional information and does not violate confidentiality.

This information is documented on page 109 of the codebook (version 1.60B), which shows that STATE is "present in survey years 1998MSA, 2002MSA."

Dav Vandenbroucke
Economist
U.S. Dept. HUD
david_a._vandenbroucke@hud.gov
202-708-1060 ext. 5890