2.1. Analysis.

Comparison 2 Abdominal wall lift without pneumoperitoneum (AWL) versus pneumoperitoneum (PP), Outcome 1 Mortality.

Mortality
Study	Observation in abdominal wall lift group	Observation in pneumoperitoneum group	Statistical significance
Kitano 1993	0/41 (0%)	0/42 (0%)	Not estimable
Koivusalo 1996a	0/13 (0%)	0/13 (0%)	Not estimable
Koivusalo 2008	0/10 (0%)	0/10 (0%)	Not estimable
Larsen 2004	0/24 (0%)	0/26 (0%)	Not estimable
Talwar 2006	0/20 (0%)	0/20 (0%)	Not estimable
Uen 2002	0/48 (0%)	0/47 (0%)	Not estimable
Uen 2007	0/40 (0%)	0/39 (0%)	Not estimable