Maintenance of weight loss or stability in subjects with obesity: a retrospective longitudinal analysis of a real-world population

OBJECTIVES:

Characterize patterns of weight change among subjects with obesity.

METHODS:

A retrospective observational longitudinal study of subjects with obesity was conducted using the General Electric Centricity electronic medical record database. Subjects who were ≥18 years old with BMI ≥30 kg/m2 (first defining index BMI), had no medical conditions associated with unintentional weight loss, and had ≥4 BMI measurements/year for ≥2.5 years were included and categorized into groups (stable weight: within <5% of index bmi; modest weight loss: ≥5 to><10% of index bmi lost; moderate weight loss: ≥10 to><15% of index bmi lost; and high weight loss: ≥15% of index bmi lost) based on weight change during 6 months following index. no interventions were considered. patterns of weight change were then assessed for 2 years.>

RESULTS:

A total of 177,743 subjects were included: 85.1% of subjects were in the stable weight, 9.3% in the modest, 2.3% in the moderate, and 3.3% in the high weight loss groups. The proportion of subjects who maintained or continued to lose weight decreased over the 2 year observation period; 11% of those with high weight loss continued to lose weight and 19% maintained their weight loss. This group had the lowest percentage of subjects who regained ≥50% of lost weight and the lowest proportion of subjects with weight cycling (defined as not continuously losing, gaining, or maintaining weight throughout the 2 year observation period relative to its beginning). This trend persisted in subgroups with class II-III obesity, pre-diabetes, and type 2 diabetes.

CONCLUSION:

Weight cycling and regain were commonly observed. Subjects losing the most weight during the initial period were more likely to continue losing weight.