Clinical trial NCT02045628: The Impact of an Investment Based Intervention on Weight-loss and Beliefs About Food in Patients Post Bariatric Surgery
Official title: The Impact of an Investment Based Intervention on Weight-loss and Beliefs About Food in Patients Post Bariatric Surgery.
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Obesity
Keywords: Bariatric Surgery
Health Psychology
Lead sponsor: University of Surrey
Sponsor class: OTHER
Collaborators: name: University College London Hospitals
First posted: 2014-01-27
Enrollment: 212
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: SUPPORTIVE_CARE

Brief summary: Although obesity surgery is currently the most effective method for achieving weight loss, not all patients lose the desired amount of weight and some show weight regain. Previous pilot work by the lead researcher shows that successful weight loss is associated with the amount of investment the patient feels that they have made in their operation. For example, those who feel that it has taken more time and effort to organise, has cost more money, has been more disruptive to their family, social and work lives and has caused pain are more likely to lose weight after their operation. Therefore, it seems as if the greater the sense of investment, the greater the motivation to make the operation a success. The present study aims to build on these findings by encouraging weight loss surgery patients to focus on the investment they have made, thus making their investment more salient to them. Using a trial design, half the patients will be asked to rate and describe the investment they have made in their operation just before surgery (focusing on the time and effort to organise the surgery etc) and 3 months after surgery (focusing on time off work for recovery, disruption of family and friends, pain of surgery, pain of having the stitches removed etc). All patients will record their weight, beliefs about food, intentions to change their behaviour and actual eating and exercise behaviour at baseline then 3, 6 and 12 months follow up. The impact of the investment based intervention will then be assessed to explore whether focusing on the investment involved in having surgery improves patient health outcomes by one year.


Eligibility criteria: Inclusion Criteria:

* aged 18 or over
* having bariatric surgery at University College Hospital

Exclusion Criteria:

* if the patient does not understand English
* if the patient does not consent to take part in the study

Primary outcomes:
measure: Change in weight
timeFrame: 12 months follow up.
Secondary outcomes:
measure: Change in psychological outcomes
timeFrame: 12 month follow up
Other outcomes:
Locations:
city: London
country: United Kingdom
facility: University College Hospital
Study officials:
affiliation: University of Surrey
name: Jane Ogden, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Hollywood A, Ogden J, Hashemi M. A randomised control trial assessing the impact of an investment based intervention on weight-loss, beliefs and behaviour after bariatric surgery: study protocol. BMC Obes. 2015 Mar 21;2:18. doi: 10.1186/s40608-015-0048-2. eCollection 2015.