Evidence map›Paper›PMID 40101743›Full record

ArticleJMIR research protocols2025

Evaluation of a Smartphone-Based Weight Loss Intervention with Telephone Support for Merchant Women With Obesity in Côte d'Ivoire: Protocol for a Randomized Controlled Trial.

Rui Usui, Maki Aomori, Shogo Kanamori, Setsuko Watabe, Bi Tra Jamal Sehi, Kei Kawano, Yuka Kanoya

Abstract readClinical Trial Protocol
In one paragraph

Article in JMIR research protocols, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
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1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Rui UsuiDepartment of Nursing, Shonan University of Medical Science, Yokohama, Kanagawa, Japan.ORCID 0000-0002-2236-162X
Maki AomoriNursing Course, School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan.ORCID 0000-0001-5478-7863
Shogo KanamoriBureau of International Health Cooperation, National Center for Global Health and Medicine, Tokyo, Japan.ORCID 0000-0002-3968-2665
Setsuko WatabeDepartment of Nursing, Shonan University of Medical Science, Yokohama, Kanagawa, Japan.ORCID 0009-0005-5311-9587
Bi Tra Jamal SehiDepartment of Human and Social Sciences, Félix Houphouët-Boigny Univesity, Abidjan, Cote D'Ivoire.ORCID 0009-0000-5506-312X
Kei KawanoNursing Course, School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan.ORCID 0009-0009-1101-2318
Yuka KanoyaNursing Course, School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan.ORCID 0009-0005-6144-7644

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe obesity rate among women in Côte d'Ivoire is rising, particularly in urban areas. Merchantry is the leading occupation for women in the country, and merchant women face a high risk of obesity owing to their sedentary lifestyle. A previous survey indicated that the obesity rate among merchant women was 30%, double the national average. Furthermore, 82.2% of merchant women with obesity were unaware of their condition, and 40.1% expressed no interest in losing weight. While most weight loss programs target individuals ready to lose weight, community interventions should also address those with minimal readiness. Additionally, low-cost weight-loss interventions that do not require health professionals are needed in countries with limited medical resources. Smartphones could offer a cost-effective solution as they enable self-monitoring and remote communication.

objectiveThis study will evaluate a low-cost smartphone-based intervention that targets individuals who are not ready to lose weight without the involvement of health professionals.

methodsThe intervention will run for 6 months, and its efficacy will be assessed in an unblinded, parallel-group, randomized controlled trial with 108 participants per group. All direct interventions for participants in this study will be carried out by staff without medical qualifications. The intervention group will receive weighing scales and be encouraged to record their weight with a smartphone app. Health education will be provided via weekly group messages and monthly phone calls. The evaluation will be conducted face-to-face. The primary outcome will be the weight change, and the secondary outcome will be differences in body fat percentage, abdominal circumference, and stage of behavioral change in weight loss behaviors from baseline to 3, 6, and 12 months.

resultsIn accordance with this protocol, the recruitment of participants started on August 26, 2024. A total of 216 participants were allocated, with 108 in the intervention group and 108 in the control group. The baseline survey began on November 15, 2024, and is currently ongoing as of the end of November 2024.

conclusionsThis study will be the first in sub-Saharan African countries to implement a smartphone app-based weight loss program in sub-Saharan Africa that does not require direct intervention by health care professionals but specifically targets communities. Furthermore, if the effectiveness of this program is confirmed, it has the potential to serve as a low-cost sustainable weight loss model at the policy level. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/69264.

Indexed as

ObesitySmartphoneWeight Reduction ProgramsAdultCote d'IvoireFemaleHumansMiddle AgedMobile ApplicationsRandomized Controlled Trials as TopicTelemedicineTelephoneWeight LossCôte d'IvoireeHealthmHealthmobile healthnoncommunicable diseasesobesityrandomized controlled trialsub-Saharan Africaweight loss programWest Africa

Identifiers

PMID40101743
PMCPMC11962317

What Socratic holds

Textmetadata
LicenceCC BY
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Registered trials

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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 Socratic graph.