Link to May 20 Pew Internet & Ameridan Life report, "Assessing the Cell Phone Challenge".
Excerpt: The latest estimates of telephone coverage, released last week by the National Center for Health Statistics, found that 25% of households (and 23% of adults) in the second half of 2009 had no landline service and only cell phone service (just 2% of households had no telephone service of any type). For certain subgroups in the population, the numbers are considerably higher: 30% of Hispanics are cell-only, as are 49% of adults ages 25-29.
Yet pollsters and other survey researchers who use the telephone as the principal means of reaching potential respondents face a difficult decision as to whether to include cell phones in their samples. Doing so adds significantly to the cost and complexity of conducting surveys at a time when respondent cooperation is becoming increasingly difficult to obtain. [Emphasis added.]
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