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Design of a Randomized Controlled Trial of a Web-Based Intervention to Reduce Cardiovascular Disease Risk Factors Among Remote Reservation–Dwelling American Indian Adults with Type 2 Diabetes

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Abstract

We describe a randomized controlled trial, the Lakota Oyate Wicozani Pi Kte (LOWPK) trial, which was designed to determine whether a Web-based diabetes and nutritional intervention can improve risk factors related to cardiovascular disease (CVD) among a group of remote reservation–dwelling adult American Indian men and women with type 2 diabetes who are at high risk for CVD. Enrollment on a rolling basis of 180 planned participants began during 2009; an average 18-month follow-up was completed by June 2011. The primary outcome variable is change in glycosylated hemoglobin level after an average 18-month follow-up period. Secondary outcome variables include changes in low-density lipoprotein cholesterol, systolic blood pressure, body mass index, and smoking status, as well as an evaluation of intervention cost-effectiveness. If effective, the LOWPK trial may serve as a guide for future chronic disease intervention trials in remote, technologically challenged settings.

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Acknowledgments

The Lakota Oyate Wicozani Pi Kte study was funded by the National Heart, Lung, and Blood Institute (UO1 HL087422). The contents of this manuscript are solely the responsibility of the authors and do not necessarily represent the official view of the National Heart, Lung, and Blood Institute. We acknowledge the contributions and support of the Indian Health Service, the Cheyenne River Sioux Tribe; staff of the University of Washington, including Corinne Hunt, Phu T. Van, Andrew Bogart, Carolyn Noonan, and Odile Lallemand; Dorene Levie and Khazi Ahmed of NuMedics, Inc.; staff associated with the Black Hills Center for American Indian Health, including Monique Giago, Stephanie Big Crow and Crissy Whitewolf; and staff of Missouri Breaks Industries Research, Inc., including Marcia O’Leary, Kendra Enright, Anne Chasing Hawk, Marie Gross, Jay Kunf, and Lillian Brown. We also acknowledge Lifescan, Inc., who provided replacement One Touch Ultra glucometer devices and USB cables (to connect the glucometers to participant computers) to the study at no cost.

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Correspondence to Jeffrey A. Henderson.

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Disclaimer: The opinions expressed in this paper are those of the author(s) and do not necessarily reflect the views of the Indian Health Service or National Heart, Lung and Blood Institute.

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Henderson, J.A., Chubak, J., O’Connell, J. et al. Design of a Randomized Controlled Trial of a Web-Based Intervention to Reduce Cardiovascular Disease Risk Factors Among Remote Reservation–Dwelling American Indian Adults with Type 2 Diabetes. J Primary Prevent 33, 209–222 (2012). https://doi.org/10.1007/s10935-012-0276-x

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