Japan Diabetes Outcome Intervention Trial-1(J-DOIT1), a nationwide cluster randomized trial of type 2 diabetes prevention by telephone-delivered lifestyle support for high-risk subjects detected at health checkups: rationale, design, and recruitment

BMC Public Health

Research Article

Naoki Ishizuka¹  Satoshi Morita²  Juichi Sato³  Sadao Suzuki⁴  Naoki Sakane⁵  Kazuhiko Kotani⁵  Yoshiko Sano⁵  Kokoro Tsuzaki⁵  Kentaro Okazaki⁵  Kaoru Takahashi⁶  Hideshi Kuzuya⁷  Masayuki Kato⁸  Kazuo Izumi⁹  Mitsuhiko Noda^1,10 

[1] Biostatistics, Biostatistics & Programming Clinical Sciences & Operation Research & Development, Sanofi K.KTokyo, Japan;Department of Biostatistics and Epidemiology, Yokohama City University, Yokohama, Japan;Department of General Medicine/Family & Community Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan;Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan;Division of Preventive Medicine, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto, Japan;Division of Preventive Medicine, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto, Japan;Hyogo Health Service Association, Hyogo, Japan;Division of Preventive Medicine, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto, Japan;Koseikai Takeda Hospital, Kyoto, Japan;Office of Strategic Outcomes Research Program, Japan Foundation for the Promotion of International Medical Research Corporation, Tokyo, Japan;Office of Strategic Outcomes Research Program, Japan Foundation for the Promotion of International Medical Research Corporation, Tokyo, Japan;Department of Diabetes and Metabolic Medicine, National Center for Global Health and Medicine, Tokyo, Japan;Office of Strategic Outcomes Research Program, Japan Foundation for the Promotion of International Medical Research Corporation, Tokyo, Japan;Department of Diabetes and Metabolic Medicine, National Center for Global Health and Medicine, Tokyo, Japan;Diabetes Research Center, National Center for Global Health and Medicine, Tokyo, Japan;

关键词: Fasting Plasma Glucose;    Impaired Fasting Glucose;    Diabetes Prevention Program;    Health Checkup;    Diabetes Prevention Study;   

DOI  :  10.1186/1471-2458-13-81

 received in 2012-02-10, accepted in 2013-01-22,  发布年份 2013

来源: Springer

【 摘 要 】

BackgroundLifestyle modifications are considered the most effective means of delaying or preventing the development of type 2 diabetes (T2DM). To contain the growing population of T2DM, it is critical to clarify effective and efficient settings for intervention and modalities for intervention delivery with a wide population reach.The Japan Diabetes Outcome Intervention Trial-1 (J-DOIT1) is a cluster randomized controlled trial to test whether goal-focused lifestyle coaching delivered by telephone can prevent the development of T2DM in high-risk individuals in a real-world setting. This paper describes the study design and recruitment of the study subjects.MethodsFor the recruitment of study subjects and their follow-up annually over 3 years, we employed health checkups conducted annually at communities and worksites. Health care divisions recruited from communities and companies across Japan formed groups as a cluster randomization unit. Candidates for the study, aged 20-65 years with fasting plasma glucose (FPG) of 5.6-6.9 mmol/l, were recruited from each group using health checkups results in 2006. Goal-focused lifestyle support is delivered by healthcare providers via telephone over a one-year period. Study subjects will be followed-up for three years by annual health checkups. Primary outcome is the development of diabetes defined as FPG≥7.0 mmol/l on annual health checkup or based on self-report, which is confirmed by referring to medical cards.ResultsForty-three groups (clusters), formed from 17 health care divisions, were randomly assigned to an intervention arm (22 groups) or control arm (21 clusters) between March 2007 and February 2008. A total of 2840 participants, 1336 from the intervention and 1504 from the control arm, were recruited. Consent rate was about 20%, with no difference between the intervention and control arms. There were no differences in cluster size and characteristics of cluster between the groups. There were no differences in individual characteristics between the study arms.ConclusionWe have launched J-DOIT1, a nation-wide trial to prevent the development of T2DM in high-risk individuals using telephone-delivered intervention. This trial is expected to contribute to evidence-based real-world preventive practices.Trial registrationUMIN000000662.

【 授权许可】

CC BY   
© Sakane et al.; licensee BioMed Central Ltd. 2013