This is the program for the 2010 Joint Statistical Meetings in Vancouver, British Columbia.

Abstract Details

Activity Number: 594
Type: Contributed
Date/Time: Wednesday, August 4, 2010 : 2:00 PM to 3:50 PM
Sponsor: Section on Survey Research Methods
Abstract - #307423
Title: Noncoverage Bias in Household Landline Telephone Surveys: The BRFSS Experience
Author(s): Lina Balluz*+ and Shaohua Sean Hu and Michael P. Battaglia and Martin R. Frankel
Companies: CDC and CDC and Abt Associates, Inc. and Baruch College, CUNY
Address: 4770 Buford Hwy, N.E., Atlanta, GA, 30341,
Keywords: Noncoverage bias ; cell phone sampling ; telephone surveys ; public health surveillance
Abstract:

To determine whether exclusion of adults with cell-phone-only may bias estimates from a landline-based survey, a screening cell phone survey was conducted in parallel with the ongoing, monthly landline data collection in 18 states in 2008. The landline and cell phone samples were weighted at state level. Logistic models were developed for each of 16 health indicators to examine whether survey approach affected estimates after adjusting for the impact of demographic characteristics. The relative biases for estimates were calculated to estimate the potential biases in landline telephone surveys that exclude cell phones. The study found that as noncoverage rate for cell-phone-only adults continued to increase, the biases for 9 out of 16 health indicators resulting from their exclusion from landline-based health survey were significantly high and cannot be ignored.


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