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Retention and Protocol Adherence of Hispanic Volunteers in a Longitudinal Trial

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Objectives : To compare Hispanic research volunteers with high and low levels of study retention and adherence.

Methods : Correlational analysis of demographics, recruitment strategies, knowledge, and attitudes of 470 households in a clinical trial.

Results : Within 12 months, 53 (11.3) households dropped out; those less certain about some factual information were more likely to drop out (P < 0.05). Participants born outside the United States were more likely to adhere to protocols (P 0.03). Flyers were effective for recruiting only 3 of participants.

Conclusions : In newly immigrated populations, written recruitment materials may be ineffective; knowledge and attitudes may be important for study retention and adherence.

Keywords: Hispanic; adherence; longitudinal studies; recruitment; retention

Document Type: Research Article


Affiliations: 1 Professor, School of Nursing and Mailman School of Public Health, Columbia University, New York, NY.

Publication date: July 1, 2009

More about this publication?
  • The American Journal of Health Behavior seeks to improve the quality of life through multidisciplinary health efforts in fostering a better understanding of the multidimensional nature of both individuals and social systems as they relate to health behaviors.

    The Journal aims to provide a comprehensive understanding of the impact of personal attributes, personality characteristics, behavior patterns, social structure, and processes on health maintenance, health restoration, and health improvement; to disseminate knowledge of holistic, multidisciplinary approaches to designing and implementing effective health programs; and to showcase health behavior analysis skills that have been proven to affect health improvement and recovery.

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