作者: Carol Pierannunzi , Shaohua Sean Hu , Lina Balluz
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摘要: Background In recent years response rates on telephone surveys have been declining. Rates for the behavioral risk factor surveillance system (BRFSS) also declined, prompting use of new methods weighting and inclusion cell phone sampling frames. A number scholars researchers conducted studies reliability validity BRFSS estimates in context these changes. As makes changes its weighting, a review is needed.