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Activity Number:
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317
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Type:
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Contributed
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Date/Time:
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Tuesday, August 4, 2009 : 10:30 AM to 12:20 PM
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Sponsor:
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Section on Survey Research Methods
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| Abstract - #305184 |
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Title:
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Analysis of Nonresponse in a Social Survey with the Sharp Bounds Method
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Author(s):
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Yury Gubman*+ and Charles F. Manski and John V. Pepper and Dmitri Romanov
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Companies:
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Israeli Central Bureau of Statistics and Northwestern University and University of Virginia and Israeli Central Bureau of Statistics
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Address:
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Kanfei Nesharim st. 66 , Jerusalem, 91342, Israel
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Keywords:
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item non-response ; MAR assumption ; sharp bounds
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Abstract:
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Non-response adjustment in the Israeli Social Survey (ISS) is based on the MAR assumption. Association of non-response with key socio-economic characteristics like income and religiosity, which do not correlate strongly with standard survey design and calibration variables, may corrupt the MAR assumption validity. We analyze survey and item non-response in the ISS by estimating nonparametric sharp bounds for the conditional mean of a variable. The width of the interval between the bounds is used as an estimator of non-response influence. We find significant departures from MAR assumption in the ISS data. The non-response propensity differs between various population groups assumed to be homogenous according to the survey design. We propose to utilize information about incomes and religiosity, available on the individual or neighborhood level, for improving the ISS design.
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