An observational study in Food Preferences Variations Depending on Bariatric Surgery Status, sponsored by Hospices Civils de Lyon. Completed at 1 site in France. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-06-18.
Sponsored by Hospices Civils de Lyon · Observational
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Among 11 studies in Food Preferences with a site in France — 2 open to participants now, 2 under way, none of them phase 3. Food Preferences · France.
Among the 11 studies in Food Preferences with a site in France, this one is the only one that started in 2018, is one of 6 observational ones, and was the 5th registered.
155 studies on the registry are indexed under Food Preferences; 19 are open to participants now.
Browse Food Preferences studies →2 of the 11 studies in Food Preferences with a site in France are open now. Recruiting first, the newest first:
Hospices Civils de Lyon · Sites in France
Ages 25–65
Assistance Publique - Hôpitaux de Paris · Sites in France
Ages 18+
A study can be open while its sites in France have not opened yet or have stopped. Only those recruiting at a site in France →
Of the 15 Food Preferences studies recruiting now, 2 (13%) set no upper age limit and 12 (80%) stop at 75 or younger; 5 take children under 18; 12 take healthy volunteers.
This study: 18 Years to 65 Years · all sexes · healthy volunteers too.
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11 studies; the count open now beside each. This study's row is marked.
First in 2010; this study’s year is marked. 1 started in 2018.
By drug class, each counting the studies that test any of its medicines:
This study's enrollment of 96 is above the median of 80 across 34 observational studies indexed under Food Preferences.
Median enrollment 133 across the 5 interventional studies, 111 across the 6 observational. Of the 8 that completed or were terminated, 0 (0%) have results posted.
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None of the 11 has an industry lead sponsor. The 8 most frequent:
Hospices Civils de Lyon is the lead sponsor of 1,867 studies on the registry; 448 are open to participants now.
Hospices Civils de Lyon has 3 studies filed under Food Preferences — fewer than ten, so there is no comparison to draw.
1 of the studies in Food Preferences with a site in France that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT07268508Hospices Civils de LyonImpact of a Pro-diversity Gut Microbiota Diet After a Bariatric Surgery on Gut Microbiota, Eating Behaviour and Sensory Function | 2027-11-05 |
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Among the 11 studies in Food Preferences with a site in France, from their registry updates:
Nothing recorded among them since 2026-09-25.
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More than 50,000 patients in France benefit from bariatric surgery every year. However, nutritional complications (protein malnutrition, hypoglycaemia) are common and primary or secondary weight failures (weight recovery) account for almost 20% of operated. Weight loss and the metabolic effects of surgery are not related only to a reduction in dietary intakes, but also to mechanisms independent of caloric reduction, such as eating behaviour after bariatric surgery (Gastric Bypass or sleeve gastrectomy). These choices are guided by perceived changes in the properties of the food, resulting in changes in tastes, palatability and more generally food preferences. Among available tools to evaluate dietary preferences we selected the Food Leeds Preference Questionnaire (FLPQ) to assess those modifications. During this test, photographs of food products classified according to predetermined characteristics are presented with different instructions and response design to estimate liking, wanted for food, implicitly or explicitly. Our main hypothesis is that the use of the Food Leeds Preference Questionnaire will highlight differences in dietary preferences according to the type of bariatric surgery performed.
We will be conducted a study observational study on three parallel groups: a control group composed of patients suffering from unoperated obesity, a group of patients operated for a sleeve gastrectomy and a group of patients operated for a gastric bypass. We will include 45 patients per group. The patients will have to pass the Leeds Food Preference Questionnaire (LFPQ). Our judgment criterion will be the degree of food preference assessed using the LFPQ. Participants will also be assessed on behavioural parameters with the Binge Eating Scale, the Yale Food Addiction Scale Version 2.0 and the Urgency, lack of Premeditation, lack of Perseverance and Sensation seeking Impulsive behavior scale (UPPS-P) short version.
This study will focus on a population of patients who are or have been obese and are being cared for at the Lyon Sud Hospital Center. Patients will either be undergoing initial assessment or being assessed for follow-up after bariatric surgery (after sleeve gastrectomy or gastric bypass).
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Healthy volunteers
Behavioral: Food preference
Health professionals
Behavioral: Food preference
Control group : patients obese without surgery
Other: Psychological assesment
Patients who have underwent a sleeve gastrectomy
Other: Psychological assesment
Patients who have underwent a gastric bypass
Other: Psychological assesment
The study will take place in two phases. A first phase will consist in the validation of translations and the selection of images on 20 healthy volunteers and 20 health professionals specialized in nutrition. They will have to fill a form with images of food and evaluate to what extend they think the pictures represent what we can eat in France. This step will adapt the questionnaire to our country.
Phase performed with patients fasting for at least 2 hours before the different tests. The FLPQ will be compared between a group of patients suffering from unoperated obesity (OCt), a group of patients operated on a sleeve gastrectomy (OSl) and a group operated by a bypass (OBy) between 6 and 24 months post-surgery, randomized for the 6 combined tests (2 categories). The award can be made in 2 sessions of at least 3 of the 6 tests combined. Each test combines 2 of the 11 categories. The test will consist of 96 pairs of 16 food images presented on a computer screen in color. Participants will be invited to "choose the food they most want to eat", by pressing the corresponding computer button (choices saved by counting the frequency scores in E-prime). The level of hunger will be evaluated by an Analogical Visual Scale, ranging from 0 to 10. Patients should also complete 3 self-questionnaires used routinely (Binge Eating Scale, The Yale Food Addiction Scale, The UPPS-P short version).
Degree of food preference
The degree of food preference will be measured using the Leeds Food Preference Questionnaire, that the investigator will have previously adapted in French for French population, in the form of counting frequency scores for each category of images.
Time frame: Day 1
Ran from Jun 2018 to primary completion in Jul 2019, 13 months.
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This study is completed, as verified in Jun 2021. You cannot join it, but the record below documents what was studied.
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