Smartphone app boosts pre-surgery weight loss in obesity trial
NCT ID NCT05598840
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether a mobile app (Care4Today®) helps people with severe obesity lose weight before gastric bypass surgery. 142 adults used either the app or standard care. The goal was to see if the app leads to more weight loss and better patient knowledge and satisfaction before surgery.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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142 people
The number who actually took part.
- Started
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Oct 2022
- Finished
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Nov 2023
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients older than 18 and younger than 65 years who meet criteria to undergo bariatric surgery BMI between 35 and 50 kg/m2 and indication of one-time surgery Signing the informed consent of the study Patient suitable for laparoscopic surgery Patient who demonstrates accessibility to a smartphone and basic digital competence Exclusion Criteria: * Previous bariatric surgery Two-step surgery Patient without resources to access the use of a Smartphone or without basic digital competence Contraindication for surgery Other surgical procedures associated with the same intervention
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Hospital Universitari de Bellvitge
L'Hospitalet de Llobregat, Barcelona, 08907, Spain
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Other studies related to the condition(s) this trial covers.
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- Can tailoring bypass length to the individual improve Weight-Loss surgery?