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In this paper, we look at item nonresponse rates for the 1996 American Community Survey (ACS) data. Our motivation for doing this is to see what questions had high nonresponse. These questions might need improvement or be in a bad location on the paper questionnaire, and further analysis should be done on them. We also look at overall nonresponse (across all modes) by site and question, and reported characteristics of item nonrespondents. Another question that we have, but will not be answered here is, "Are there any nonresponse rates that are unusual compared to other surveys and the 1990 census?"
There are four sites in the 1996 ACS test consisting of Brevard County, FL; Rockland County, NY; Multnomah County and Portland, OR; and Fulton County, PA. There are also three modes of collection for the ACS: mail, Computer Assisted Telephone Interview (CATI), and Computer Assisted Personal Interview (CAPI). We look at individual questions ( Table 2 has the question numbers with their question/topic) to see how often the item was left blank, was refused, was not known or was an illegal value. Due to the nature of the data available, these responses were all combined and reported as nonresponse. For a compete listing of nonresponse rates by state, mode of collection and question see Table 3 (***note that the CAPI universe is not weighted in this table).
The following gives a brief description of the three modes of data collection for the urban sites.
For Fulton county, a questionnaire is delivered to the housing unit by a field representative and contact is made if there is someone home. If there is no one home, the questionnaire is left at the address. No further contact is made until it is time for CAPI. At which time a 1 in 3 subsample is taken of all addresses that have not returned their forms. CAPI occurs at the same time as in the urban sites.
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