JSM 2005 - Toronto

Abstract #303461

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Legend: = Applied Session, = Theme Session, = Presenter
Activity Number: 329
Type: Contributed
Date/Time: Tuesday, August 9, 2005 : 2:00 PM to 3:50 PM
Sponsor: Section on Survey Research Methods
Abstract - #303461
Title: The Value of the Increasing Effort To Maintain High Response Rates in Telephone Surveys
Author(s): Barbara L. Carlson*+ and Richard Strouse
Companies: Mathematica Policy Research, Inc. and Mathematica Policy Research, Inc.
Address: PO Box 2393, Princeton, NJ, 08543-2393, United States
Keywords: RDD survey ; response rate ; refusal conversion ; call attempts ; nonresponse bias ; Community Tracking Study
Abstract:

Declining response rates and coverage in random-digit-dial (RDD) telephone surveys have been observed by many researchers. Several studies also show efforts to increase response rates often do not significantly affect estimates for key outcome variables. However, few such studies have been conducted on large-scale surveys that include a broad range of health services measures. Using the Community Tracking Study Household Survey, a health services survey of roughly 30,000 families per round based on a national RDD sample, we examine the impact on key survey estimates of different simulated levels of effort. Using call history data, we simulate fewer call attempts, fewer refusal conversion attempts, and shorter time periods in the field than were actually pursued. We then reweight the data according to the simulated outcomes and examine the impact of these reduced efforts on weighted estimates, comparing them to the estimates resulting from the complete survey data. These comparisons shed light on whether reducing the level of effort during data collection is likely to affect survey estimates for commonly used health services measures.

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