Trial reportBMJ open2015
Effects of telephone-delivered lifestyle support on the development of diabetes in participants at high risk of type 2 diabetes: J-DOIT1, a pragmatic cluster randomised trial.
Trial report in BMJ open, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 5 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
21 citing papers in PubMed, 5 syntheses or guidelines pooled it, 43 citations in OpenAlex.
- Digital Health Interventions to Prevent Type 2 Diabetes Mellitus: Systematic Review.Journal of medical Internet research · 2025Pooled it
- Effectiveness of Different Intervention Modes in Lifestyle Intervention for the Prevention of Type 2 Diabetes and the Reversion to Normoglycemia in Adults With Prediabetes: Systematic Review and Meta-Analysis of Randomized Controlled Trials.Journal of medical Internet research · 2025Pooled it
- Health-promotion interventions targeting multiple behaviors: A meta-analytic review of general and behavior-specific processes of change.Psychological bulletin · 2024Pooled it
- More behavioral recommendations produce more change: A meta-analysis of efficacy of multibehavior recommendations to reduce nonmedical substance use.Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors · 2020Pooled it
- The Effect of Technology-Mediated Diabetes Prevention Interventions on Weight: A Meta-Analysis.Journal of medical Internet research · 2017Pooled it
- Self-weighing frequency and the incidence of type 2 diabetes: post hoc analysis of a cluster-randomized controlled trial.BMC research notes · 2020Trial
- Effects of obesity, metabolic syndrome, and non-alcoholic or alcoholic elevated liver enzymes on incidence of diabetes following lifestyle intervention: A subanalysis of the J-DOIT1.Journal of occupational health · 2020Trial
- Effectiveness of DVD vs. group-initiated diabetes prevention on information uptake for high & low health literacy participants.Patient education and counseling · 2019Trial
- Evaluation of the effects of a diabetes educational program: a randomized clinical trial.Revista de saude publica · 2018Trial
- Changes in body mass index and waist circumference as predictors of incident prediabetes: the Aichi Workers' Cohort Study.Scientific reports · 2026Article
- Predicting patient enrollment in a telephone-based principal care management service using topic modeling.PLOS digital health · 2025Article
- Intensified Multifactorial Intervention in Patients with Type 2 Diabetes Mellitus.Diabetes & metabolism journal · 2023Review
- The National Clinical Care Commission Report to Congress: Leveraging Federal Policies and Programs to Prevent Diabetes in People With Prediabetes.Diabetes care · 2023Review
- Optimization of nutritional strategies using a mechanistic computational model in prediabetes: Application to the J-DOIT1 study data.PloS one · 2023Article
- Association Between a Low Carbohydrate Diet, Quality of Life, and Glycemic Control in Australian Adults Living With Type 1 Diabetes: Protocol for a Mixed Methods Pilot Study.JMIR research protocols · 2021Article
- Effect of Eating Glutinous Brown Rice Twice a Day for 6 Weeks on Serum 1,5-Anhydroglucitol in Japanese Subjects without Diabetes.Journal of nutrition and metabolism · 2020Article
- Implementation and evaluation of a primary diabetes prevention programme for young adult employees in Japan: A non-randomized controlled trial.Nursing open · 2020Article
- Satisfaction with a digitally-enabled telephone health coaching intervention for people with non-diabetic hyperglycaemia.NPJ digital medicine · 2019Article
- Effect of a newly-devised nutritional guide based on self-efficacy for patients with type 2 diabetes in Japan over 2 years: 1-year intervention and 1-year follow-up studies.Journal of diabetes investigation · 2017Observational
- A Critical Examination of the Use of Trained Health Coaches to Decrease the Metabolic Syndrome for Participants of a Community-Based Diabetes Prevention and Management Program.Journal of healthcare communications · 2016Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
15 authors at 9 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo examine the effects of telephone-delivered lifestyle coaching on preventing the development of type 2 diabetes mellitus (T2DM) in participants with impaired fasting glucose (IFG).
designCluster randomised trial.
setting40 groups from 17 healthcare divisions in Japan: companies (31), communities (6) and mixed settings (3).
participantsParticipants aged 20-65 years with fasting plasma glucose (FPG) of 5.6-6.9 mmol/L were invited from the 17 healthcare divisions. RANDOMISATION: The groups were then randomly assigned to an intervention or a control arm by independent statisticians according to a computer-generated list.
interventionThe intervention arm received a 1-year telephone-delivered intervention provided by three private lifestyle support centres (at different frequencies: low-frequency (3 times), middle-frequency (6 times) and high-frequency (10 times) support calls). The intervention and control arms both received self-help devices such as a weight scale and pedometer. OUTCOMES: Participants were followed up using data from annual health check-ups and a questionnaire regarding lifestyle. The primary outcome was the development of T2DM defined as FPG ≥ 7.0 mmol/L, the diagnosis of diabetes, or use of an antidiabetic drug, confirmed by referring to medical cards.
resultsOf 14,473 screened individuals, participants were enrolled in either the intervention (n = 1240) arm or control (n = 1367) arm. Overall, the HR for the development of T2DM in the intervention arm during 5.5 years was 1.00 (95% CI 0.74 to 1.34). In the subanalysis, the HR was 0.59 (95% CI 0.42 to 0.83) in the subgroup that received phone calls the most frequently, compared with the control arm. A limitation of the study includes a lack of blinding.
conclusionsHigh-frequency telephone-delivered lifestyle support could effectively prevent T2DM in participants with IFG in a primary healthcare setting, although low-frequency and middle-frequency phone calls did not. TRIAL REGISTRATION NUMBER: This trial has been registered with the University Hospital Medical Information Network (UMIN000000662).
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.