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  Vol. 2 No. 10, October 1993 TABLE OF CONTENTS
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Thirty-Month Evaluation of a Popular Very-Low-Calorie Diet Program

Thomas J. Flynn, MD; Michael F. Walsh, MD

Arch Fam Med. 1993;2(10):1042-1048.


Abstract

Objective
To analyze weight maintenance, cost, and predictors of weight maintenance in a formula-based verylow-calorie diet program.

Design and Setting
Consecutive sample of patients evaluated at 30 months after program entry at a community hospital in Orange Park, Fla.

Patients
Consecutive sample of 306 patients who entered a very-low-calorie diet program. Of these, 255 met inclusion criteria.

Intervention
Patients entered a 26-week very-low-calorie diet program. At 30 months after program entry, questionnaires were mailed. Data were collected via telephone interview, as needed.

Main Outcome Measures
Initial and maintained weight loss, and association of weight loss to the following factors: insurance coverage, continued exercising, weeks attended, exit weight in relation to ideal weight, and cost per kilogram of weight loss.

Results
Medically significant weight loss of 10% was initially achieved by 90% of patients and maintained by 33%. The average initial weight loss was 21.4 kg and the maintained weight loss was 6.5 kg for all patients. For those who remained in the program 19 weeks (61%), the initial weight loss was 25.6 kg and the maintained weight loss was 9.2 kg. Exercisers maintained more than twice as much weight loss as nonexercisers. Men lost a larger percentage of weight (22% vs 19%) and maintained more of that loss (29.5% vs 8.3%). Maintenance was not associated with insurance coverage and at how close patients came to achieving ideal weight. The cost was $396 per Kilogram of weight loss maintained. An improved sense of well-being was expressed by 71% of patients.

Conclusions
Very-low-calorie diet programs can be effective in maintaining a medically significant weight loss in some patients at 30 months after program entry. Longer attendance and regular exercise help weight maintenance. The high costs and rate of weight regain indicate the need to find a more affordable and effective strategy for weight loss and maintenance.



Author Affiliations

From the Department of Internal Medicine, Orange Park (Fla) Medical Center (Dr Flynn), and the Department of Family Practice, Family Practice Residency Program, The Medical Center, Columbus, Ga (Dr Walsh).



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