Clinical trial NCT01095458: Phone Versus Clinical Approach to Weight Loss
Official title: Equivalent Weight Loss for Phone and Clinic Weight Management Programs
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Obesity
Keywords: Obesity
Phone vs Clinical methods
Lead sponsor: University of Kansas Medical Center
Sponsor class: OTHER
Collaborators: name: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
First posted: 2010-03-30
Enrollment: 395
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: Weight loss and maintenance continues to be problematic for individuals who are overweight or obese. State-of-the-art treatment generally involves a behavioral weight loss clinic that emphasizes nutrition, physical activity, and lifestyle changes and is delivered face-to-face between health educators and small groups of participants. This delivery system is time consuming, expensive, and presents numerous barriers to the participant. We have developed a phone based delivery system that eliminates many of these barriers by substituting group conference calls for clinics and by delivering weight loss materials and products directly to the participant.

Hypothesis 1: We expect equivalent weight loss from baseline for phone and clinic groups and have defined equivalence as no greater than 4 kg difference between groups based on our pilot data and potential for clinical significance.

Hypothesis 2: During weight maintenance it is likely that participants will experience some weight re-gain. We expect both phone and clinic groups to re-gain a similar amount of weight and that weight for both groups at 18 months will be significantly less than baseline weights.

Hypothesis 3: We will complete a cost analysis to determine which delivery method is more economical. Specifically, we expect the phone delivery system to be more cost effective than that of the in-person clinics.

Detailed description: Weight loss and maintenance continues to be problematic for individuals who are overweight or obese. State-of-the-art treatment is delivered face-to-face between care providers and small groups of participants and this is time consuming, expensive, and presents numerous barriers to the participant such as travel, conflict with work and home, need for child care, loss of anonymity, and others as well as the care provider such as office space, meeting rooms, inventory, etc. A pilot study of a phone based delivery system versus a traditional clinic has been completed with no difference in weight loss. The phone approach may eliminate many of the barriers of a traditional clinic by substituting conference calls for clinics and by delivering weight loss materials and products directly to the participant. In this fashion, the care provider and participants can reside in any location and receive the same information by conference phone call as that provided by clinic, and receive educational materials, weight management products, etc. by air or ground transportation.

This proposed investigation is a randomized, equivalency trial to test the effectiveness of a phone based weight management program compared to a traditional face-to-face clinic program for weight loss and weight maintenance. It is expected that at 6 months participants in the phone and clinic groups will show equivalent weight loss and that weight loss will be at least 10% lower than baseline. During weight maintenance some weight gain may occur. However, we expect both phone and clinic groups to gain a similar amount of weight and that weight for both groups at 18 months will be significantly less than baseline weights.

A formal cost analysis will be used to determine differences between phone and clinic approaches and extensive process analysis will be used to collect both qualitative and quantitative data to assess how well the programs were implemented as originally designed, challenges and barriers to effective implementation, initial and continual use of program specified activities, quality assurance measures, etc.

Relevance: If successful, the phone approach may eliminate many of the barriers inherent to the traditional face-to-face clinic, may be less expensive, and would potentially open weight management to any individual with access to a phone. We believe the likelihood of translation of this research to the public sector would seem reasonable and promising.

Eligibility criteria: Inclusion Criteria:

* 18-65 years,
* BMI between 25 and 39.9,
* Clearance from PCP.

Exclusion Criteria:

* Research project within previous 6 months,
* Exercise \> 500 kcal/week,
* Pregnancy,
* Serious medical risk,
* Eating disorders,
* Use of special diets.

Primary outcomes:
measure: Equivalent weight loss for phone and clinic groups.
timeFrame: 6 months
Secondary outcomes:
measure: Equal weight management/regain.
timeFrame: 12 months
measure: Cost Analysis
timeFrame: 18 months
Other outcomes:
Locations:
city: Lawrence
country: United States
facility: Energy Balance Lab, The University of Kansas
state: Kansas
Study officials:
affiliation: University of Kansas
name: Joseph E Donnelly, EdD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Donnelly JE, Goetz J, Gibson C, Sullivan DK, Lee R, Smith BK, Lambourne K, Mayo MS, Hunt S, Lee JH, Honas JJ, Washburn RA. Equivalent weight loss for weight management programs delivered by phone and clinic. Obesity (Silver Spring). 2013 Oct;21(10):1951-9. doi: 10.1002/oby.20334. Epub 2013 May 25.
citation: Lambourne K, Washburn RA, Gibson C, Sullivan DK, Goetz J, Lee R, Smith BK, Mayo MS, Donnelly JE. Weight management by phone conference call: a comparison with a traditional face-to-face clinic. Rationale and design for a randomized equivalence trial. Contemp Clin Trials. 2012 Sep;33(5):1044-55. doi: 10.1016/j.cct.2012.05.014. Epub 2012 Jun 1.