It turns out that the CDC did the research because their statisticians were becoming concerned that their polling data was becoming skewed by the absence of cellphone-only households in their respondent pool. As they expanded their search, the study's author, Stephen Blumberg, Ph.D., noted that this undersurveyed group tends to be poorer and have notable differences in lifestyle, health, and access to health care from their wired cohorts.
via Wireless Substitution: Early Release of Estimates From the National Health Interview Survey, July-December 2009 |
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