Trial reportObesity (Silver Spring, Md.)2015
Cell phone intervention for you (CITY): A randomized, controlled trial of behavioral weight loss intervention for young adults using mobile technology.
Trial report in Obesity (Silver Spring, Md.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to 3 registered trials, which are not on this map. Cited by 90 papers, 22 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.
Cell Phone Intervention in Young Adults
Effects of a Smart Phone Application in the Secondary Clinical Prevention Management for Chinese Patients After Coronary Intervention Treatment: a Randomized Controlled Trial
Use of New Technologies for the Follow-up in Adolescent Obesity
Who cites it
90 citing papers in PubMed, 22 syntheses or guidelines pooled it.
- Ecological Momentary Interventions in the Management of Eating Disorders and Obesity: A Systematic Review.The International journal of eating disorders · 2026Pooled it
- Effects of Stand-Alone Digital Lifestyle Interventions on Weight-Related Outcomes in Adults With Overweight or Obesity: Systematic Review and Meta-Analysis of Randomized Controlled Trials.Journal of medical Internet research · 2026Pooled it
- Mobile health (m-health) smartphone interventions for adolescents and adults with overweight or obesity.The Cochrane database of systematic reviews · 2024Pooled it
- Medical Nutrition Therapy Interventions Provided by Dietitians for Adult Overweight and Obesity Management: An Academy of Nutrition and Dietetics Evidence-Based Practice Guideline.Journal of the Academy of Nutrition and Dietetics · 2023Guideline
- Healthy Eating Index Diet Quality in Randomized Weight Loss Trials: A Systematic Review.Journal of the Academy of Nutrition and Dietetics · 2023Pooled it
- European guideline on obesity care in patients with gastrointestinal and liver diseases - Joint European Society for Clinical Nutrition and Metabolism / United European Gastroenterology guideline.United European gastroenterology journal · 2022Guideline
- A systematic review of inequalities in the uptake of, adherence to, and effectiveness of behavioral weight management interventions in adults.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2022Pooled it
- Factors Influencing Adherence to mHealth Apps for Prevention or Management of Noncommunicable Diseases: Systematic Review.Journal of medical Internet research · 2022Pooled it
- The Effectiveness of Combining Nonmobile Interventions With the Use of Smartphone Apps With Various Features for Weight Loss: Systematic Review and Meta-analysis.JMIR mHealth and uHealth · 2022Pooled it
- A systematic review of the use of dietary self-monitoring in behavioural weight loss interventions: delivery, intensity and effectiveness.Public health nutrition · 2021Pooled it
- Recruiting and retaining young adults: what can we learn from behavioural interventions targeting nutrition, physical activity and/or obesity? A systematic review of the literature.Public health nutrition · 2021Pooled it
- Use of Technology-Based Interventions in the Treatment of Patients with Overweight and Obesity: A Systematic Review.Nutrients · 2020Pooled it
- Pooled it
- Mobile Apps for Health Behavior Change in Physical Activity, Diet, Drug and Alcohol Use, and Mental Health: Systematic Review.JMIR mHealth and uHealth · 2020Pooled it
- Assessment of the Efficacy, Safety, and Effectiveness of Weight Control and Obesity Management Mobile Health Interventions: Systematic Review.JMIR mHealth and uHealth · 2019Pooled it
- The effectiveness of app-based mobile interventions on nutrition behaviours and nutrition-related health outcomes: A systematic review and meta-analysis.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2019Pooled it
- Motivational interviewing in eHealth and telehealth interventions for weight loss: A systematic review.Preventive medicine · 2019Pooled it
- Pooled it
- Mobile App-Based Health Promotion Programs: A Systematic Review of the Literature.International journal of environmental research and public health · 2018Pooled it
- The use of social media in nutrition interventions for adolescents and young adults-A systematic review.International journal of medical informatics · 2018Pooled it
30 more citing papers are in PubMed but not listed here.
Corrections and comments
- Erratum issuedErratum: Cell phone intervention for you (CITY): A randomized, controlled trial of behavioral weight loss intervention for young adults using mobile technology.2016 · Bennett, G B [Corrected to Bennett, G G]
Authors and funding
14 authors.
Funding
Abstract
objectiveTo determine the effect on weight of two mobile technology-based (mHealth) behavioral weight loss interventions in young adults.
methodsRandomized, controlled comparative effectiveness trial in 18- to 35-year-olds with BMI ≥ 25 kg/m(2) (overweight/obese), with participants randomized to 24 months of mHealth intervention delivered by interactive smartphone application on a cell phone (CP); personal coaching enhanced by smartphone self-monitoring (PC); or Control.
resultsThe 365 randomized participants had mean baseline BMI of 35 kg/m(2) . Final weight was measured in 86% of participants. CP was not superior to Control at any measurement point. PC participants lost significantly more weight than Controls at 6 months (net effect -1.92 kg [CI -3.17, -0.67], P = 0.003), but not at 12 and 24 months.
conclusionsDespite high intervention engagement and study retention, the inclusion of behavioral principles and tools in both interventions, and weight loss in all treatment groups, CP did not lead to weight loss, and PC did not lead to sustained weight loss relative to Control. Although mHealth solutions offer broad dissemination and scalability, the CITY results sound a cautionary note concerning intervention delivery by mobile applications. Effective intervention may require the efficiency of mobile technology, the social support and human interaction of personal coaching, and an adaptive approach to intervention design.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.