Background

Obesity is associated with several health problems and weight loss programs may provide a solution, however, sustainability of results has been questioned. The aim of this study was to identify factors impact on members’ weight loss and different characteristics of members based on their weight maintenance status (WMS).

Methods

Data from 8,870 adults (77.75 % female, 47.41 years, 214.21 lbs.) who participated in a comprehensive behavioral weight loss intervention delivered through health coaches were used in the analyses. Weight loss and weight change percentage were computed, and participants were divided into 4 groups by WMS. Multiple regression analysis was used to examine factors affecting to members’ weight loss. Membership duration, monthly appointment frequency (AF), and total spending were included in this model. ANOVA and chi-square were used to identify members’ characteristics (AF, gender) based on WMS.

Results

Average weight loss at 267.33 days was -18.73. The result shows that members tend to lose more weight if they visit center more often and spend more money on the program. Specifically, the results indicates that if members complete an additional appointment in a month, they could loss 1.064 lbs. or additional 0.464% of weight loss is expected. Similarly, additional expense of one-thousand-dollar results in weight loss in 6.491 lbs. or 2.879% of additional weight change. AF and gender variables are related to WMS (p<.001). More specifically, members who tend to visit more frequently are more likely to preserve their weight loss. Females are more likely to re-gain their weight.

Conclusions

Our results suggest that strong compliance to weight loss program may produce greater weight loss and preserve the weight loss.