A study published in BMC Health Services Research found the most satisfied patients were the most likely to participate in a post-hospitalization satisfaction survey. Researchers concluded this tendency produces an upward bias in observed satisfaction scores, and a positive correlation between average satisfaction and response rate across surveys. The study analyzed 717 annual patient satisfaction surveys conducted between 2011 and 2015 at 164 Swiss hospitals.
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- Patient satisfaction and survey response in 717 hospital surveys in Switzerland: a cross-sectional study. BMC Health Services. 2 March 2020