Table 2.

Perioperative factors.

	Extraperitoneal Group		Historical Control Group		p *
	median	range	median	range
intraoperative blood loss (ml)	220	41-1100	573	268-2450	<0.001
total operating time (min)	265	198-370	323.5	238-424	<0.001
laparotomy time (min)	60	41-120	295	208-380	<0.001
lymphadenectomy time (min)	178.5	139-280	235	160-330	0.0164
number of dissected PLN **	30	20-63	28	21-42	0.2509
number of dissected PAN ***	14	4-37	17	(9-28)	0.2385
time until initial passage of flatus (hr)	8	(3-20)	32	19-48	<0.001
time until removal of all drains (day)	7.5	(4-18)	20	(14-30)	<0.001

* Mann-Whitney's U test; ** PLN : pelvic lymph nodes; *** PAN : para-aortic lymph nodes