. 2011 Jun 1;5(2):29–35. doi: 10.1016/j.esas.2011.02.001

Table 3.

Cost-utility data

Variable	Open			MIS			P value

	N	Mean	SD	N	Mean	SD
Direct cost (Can $)	40	$18,632.91	6,197.32	36	$14,171.93	3,269.73	.0009^*
Utility score at baseline	29	0.49	0.08	28	0.60	0.09	< .0001^†
Utility score at 1 y	29	0.57	0.10	28	0.72	0.09	< .0001^†

Whitney-Mann test.

^†

t Test.