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. 2011 Apr;54(2):138–143. doi: 10.1503/cjs.041209

Table 1.

Pre- and postoperative weight loss metrics of 34 patients who underwent laparoscopic sleeve gastrectomy

Metric Mean (SD) [range]
Preoperative Postoperative Overall loss Monthly loss
Body mass, kg 134.2 (21.9) [92.3–201.8] 106.7 (20.4) [70.0–168.2] 27.4 (9.0) [5.0–47.3] 3.3 (1.8) [0.3–8.6]
BMI, kg/m2 50.3 (7.7) [33.0–68.0] 39.9 (6.7) [25.0–57.0] 10.4 (3.5) [2.0–17.0] 1.3 (0.7) [0.1–4.0]
%EWL 38.4 (13.8) [7.1–73.7] 4.5 (2.6) [0.6–12.8]
%EBL 43.4 (17.1) [8.7–100] 5.1 (3.1) [0.8–16.7]

BMI = body mass index; %EBL = percent excess body mass index loss; %EWL = percent excess weight loss; SD = standard deviation.