CompletedNot Applicable

Petit Cactus Study

Canada73 participantsStarted 2025-02-20

Plain-language summary

The goal of this trial is to test a newly developed carbohydrate counting mobile application (named Petit Cactus) with photo recognition, for people with type 1 diabetes. To evaluate Petit Cactus, our objectives are: 1. To measure the association between app engagement and changes in blood glucose management over the same period. 2. To assess the usability of the app, focusing on engagement (i.e., frequency of meal logs) over 3 months and user satisfaction. 3. To validate the nutritional data obtained from the app's photo recognition algorithm by comparing it with a validated nutrient intake method (in this case, a web-based 24h recall). Participants will submit their Ambulatory Glucose Profile (i.e., CGM data) at the beginning and at the end of 3 months, download the app to use for carbohydrate counting for the 3-month duration, complete a usability questionnaire at the end of 3 months, and complete an end-of-study interview to report on their satisfaction with the app.

Who can participate

Age range

14 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion criteria: * Diagnosed with T1D for at least 1 year on basal-bolus insulin regimen * Uses a Continuous Glucose Monitoring (CGM) system * Aged 14 years or older; 4. Residing in Canada * Able to speak/understand French or English * Uses carbohydrate counting as part of treatment regimen i.e., knows their insulin-to-carb ratio and correction factors. Exclusion criteria: \- Unable to use a smartphone with internet access

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Time-in-Range

Timeframe: At baseline and 3 months

Estimated A1c

Timeframe: At baseline and at 3 months

Engagement

Timeframe: Throughout the 3 months

System Usability System Scale

Timeframe: At 3 months

Usability perception and experiences themes

Timeframe: At 3 months

Trial details

NCT IDNCT07380802

SponsorMcGill University

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2025-08-15

View on ClinicalTrials.gov More Type1diabetes trials