Assessing the feasibility and sample quality of a national random-digit dialing cellular phone survey of young adults.
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Date
2013-12-17
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Abstract
The majority of adults aged 18 34 years have only cellular phones making random digit dialing of landline telephones an obsolete methodology for surveillance of this population However 95 of this group has cellular phones This article reports on the 2011 National Young Adult Health Survey NYAHS a pilot study conducted in the 50 US states and Washington DC that used random digit dialing of cellular phones and benchmarked this methodology against that of the 2011 Behavioral Risk Factor Surveillance System BRFSS Comparisons of the demographic distributions of subjects in the NYAHS and BRFSS aged 18 34 years with US Census data revealed adequate reach for all demographic subgroups After adjustment for design factors the mean absolute deviations across demographic groups were 3 percentage points for the NYAHS and 2 8 percentage points for the BRFSS nationally and were comparable for each census region Two sided z tests comparing cigarette smoking prevalence revealed no significant differences between NYAHS and BRFSS participants overall or by subgroups The design effects of the sampling weight were 2 09 for the NYAHS and 3 26 for the BRFSS Response rates for the NYAHS and BRFSS cellular phone sampling frames were comparable Our assessment of the NYAHS methodology found that random digit dialing of cellular phones is a feasible methodology for surveillance of young adults
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Keywords
Quality/unreliability of data, Feasibility, Tobacco Use, Data collection and reporting, Voice, Audio