The Effect of Preoperative Weight Loss before Gastric Bypass: A Systematic Review

Table 4

Rejected Studies

Lead author	Study design	Group	Patients	Age	Female (%)
Riess et al. [18]	Retrospective	WL	74	43.4	70.3%
		WG (non-WL)	279	42.7	86.4%

WL: weight loss; WG: weight gain.