Table 4.

SNK (Student-Newman-Keuls) *test for operative and postoperative variables in the RH ,LH, and OH Groups

			RH group	LH group	OH group
			n = 19	n = 13	n = 25	Significance
Subset for α = 0.05	Operative time (min)	1			190.1600	1.000
		2	256.2632	268.3846		0.582
	Operative time (min) (remove setup time)	1	216.2632		190.1600	1.000
		2		268.3846		0.239
	Intraoperative blood loss (ml)	1	319.4737			1.000
		2		476.9231		1.000
		3			628.0000	1.000
	Postoperative hospital stay(d)	1			7.2400	1.000
		2	5.5263	4.6923		0.246
	Time to oral intake(d)	1			3.0800	1.000
		2	2.1579	1.9231		0.508
	Time to off-bed activity(d)	1			2.8000	1.000
		2	1.8421	1.6923		0.573
	VAS score	1			4.8800	1.000
		2	2.5236	2.3077		0.565

*Groups are in the same subset indicate no difference between these groups