Abstract #300130

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JSM 2003 Abstract #300130
Activity Number: 292
Type: Contributed
Date/Time: Tuesday, August 5, 2003 : 2:00 PM to 3:50 PM
Sponsor: Section on Survey Research Methods
Abstract - #300130
Title: The Impact of Ring-No-Answer Telephone Numbers in Random-Digit-Dialing Survey Response Rates
Author(s): Michael P. Battaglia*+ and Martin R. Frankel and Meena Khare and Dale W. Kulp and Jessica Cardoni
Companies: Abt Associates, Inc. and The City University of New York and National Center for Health Statistics and MSG/GENESYS Sampling Systems and Abt Associates, Inc.
Address: 55 Wheeler St., Cambridge, MA, 02138-1192,
Keywords: National Immunization Survey ; Unresolved Telephone Numbers ; AAPOR ; CASRO
Abstract:

AAPOR guidelines for calculating response rates for RDD samples indicate that some method must be used to estimate the percentage of unresolved numbers that are residential. These telephone numbers are called repeatedly, but it is never determined if they are residential, business or nonworking. The largest group of unresolved numbers is no-answer outcomes. Using the NIS, a national sample of no-answer to all 10 attempt numbers was drawn. These numbers received three treatments in an effort to determine their status: 1) 43 additional call attempts at different times and days of the week were made, 2) local telephone company business offices were contacted to check the status of the numbers, and 3) the numbers were processed through an automated dialing procedure using different long distance carriers to identify nonworking numbers. The results from all three sources will be compared, and each sample number will be classified into one of the three outcomes. The estimate of the percentage of no answer numbers that are residential will be used to calculate the response rate, and comparisons will be made with other methods for calculating RDD response rates.

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