Analysis of long-term outcome of modified gastric bypass for type 2 diabetes mellitus in Chinese patients

Table 1 Changes in weight and body mass index before and after laparoscopic gastric bypass surgery (mean ± SD)

	Preoperative (n)	5 years after surgery (n)	P value
Weight (kg)	84.6 ± 17.3 (37)	67.1 ± 12.2 (37)a	0.001
BMI (kg/m2)	30.9 ± 5.0 (37)	24.6 ± 3.9 (37)a	0.001

^aP < 0.05, the differences were statistically significant when compared with the preoperative period.

BMI: Body mass index.