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Volunteer Participation in the Health eHeart Study: A Comparison with the US Population.


ABSTRACT: Direct volunteer "eCohort" recruitment can be an efficient way of recruiting large numbers of participants, but there is potential for volunteer bias. We compared self-selected participants in the Health eHeart Study to participants in the National Health And Nutrition Examination Survey (NHANES) 2013-14, a cross-sectional survey of the US population. Compared with the US population (represented by 5,769 NHANES participants), the 12,280 Health eHeart participants with complete survey data were more likely to be female (adjusted odds ratio (ORadj)?=?3.1; 95% confidence interval (CI) 2.9-3.5); less likely to be Black, Hispanic, or Asian versus White/non-Hispanic (ORadj's?=?0.4-0.6, p?

SUBMITTER: Guo X 

PROVIDER: S-EPMC5434039 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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Volunteer Participation in the Health eHeart Study: A Comparison with the US Population.

Guo Xiaofan X   Vittinghoff Eric E   Olgin Jeffrey E JE   Marcus Gregory M GM   Pletcher Mark J MJ  

Scientific reports 20170516 1


Direct volunteer "eCohort" recruitment can be an efficient way of recruiting large numbers of participants, but there is potential for volunteer bias. We compared self-selected participants in the Health eHeart Study to participants in the National Health And Nutrition Examination Survey (NHANES) 2013-14, a cross-sectional survey of the US population. Compared with the US population (represented by 5,769 NHANES participants), the 12,280 Health eHeart participants with complete survey data were m  ...[more]

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