《美国国家健康访问调查》的结果显示，在2008年下半年，超过20%的美国家庭只使用无线业务。
In the second half of 2008, more than 20% of U.S. households had only wireless service, according to a National Health Interview Survey.
人口调查员会访问当地家庭几次，这样做是为2010年的人口普查工作提供居民的一些信息。
Census takers visit local homes several times to capture resident information for the 2010 Census.
调查访问了1012名女性，发现家庭主妇和低学历女性较在职女性更认识X光造影检查。
Housewives and also those of a lower education were more aware about mammograms than working women, the survey of 1,012 women found.
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