Percent total weight change following GB for patients divided into three groups based on initial BMI (lowest BMI group < 43 kg/m2, middle BMI group 43–48 kg/m2, highest BMI group > 48 kg/m2) with respective n = 72, 66, and 79. Data availability at 1, 1.5, 2, 3, 4, and 5 years respectively was 51, 36, 48, 47, 49, and 46 patients for the lowest BMI group, 50, 26, 41, 39, 43, and 36 patients for the middle BMI group, and 53, 35, 56, 57, 42, and 41 patients for the highest BMI group. *, p < 0.05.