We carried out a historical cohort combined with prospective follow-up study to evaluate long-term efficacy of a 12-week weight loss program by Tri-Service General Hospital, Taiwan, and to assess the predictors for the maintenance of weight loss achieved. The variables of interest included demographic and psychological characteristics, social support and changes in eating and exercise behaviors. Data were using questionnaires and subjects’ record at enrollment, during program and at the end of an averaged 3.43-year follow-up. During 1992- 1996, 149 attendees (19 men and 130 women) aged 18-65 years enrolled, 116 (78%) completed the program. In the final follow-up, 66 (44%) subjects returned for the interview, 11 (6%) subjects responded to a mailed questionnaire. Generalized linear models were used to assess the long-term effect of the program. Those who completed the program lost an average of 5.9kg (SD 3.2kg) (p<0.001) at the end of program. Many subjects experienced relapse and an average 4 kg gain back at the final follow-up. The success rate of long-term weight loss (5% of the initial weight) was 27%. Although several factors predicted long-term weight loss univariately, multivariable predictors were limited to those who with 1) shorter follow-up interval; 2) higher degree of weight loss during intervention; 3) the lower self-classified weight score by MBSRQ. Efforts to improve body image and to reinforce weight loss principle may help upon the success of long-term weight loss program.
Learning Objectives: Participants in the session will acquire not only the techniques in designing, implementing and data analyzing of a historical cohort combined with prospective follow-up study but also the context of weight control issue. At the conclusion of the session, the participant in this session will be able to: 1. Recognize the context in evaluating weight loss program. 2. List the factors that predict long-term weight-loss and may develop a refine program with the concepts to strengthen the long-term efficacy in the future
Keywords: Weight Management, Hospitals
Presenting author's disclosure statement:
Organization/institution whose products or services will be discussed: None
I do not have any significant financial interest/arrangement or affiliation with any organization/institution whose products or services are being discussed in this session.