Table 4.

SF-12 preoperative, postoperative, and change scores

Variable	SF-12 score category	Group	Significance	Mean	Standard deviation
Preoperative	Mental	Female	0.001	50.3	11.3
		Male		53.6	11.2
	Physical	Female	0.001	27.8	6.7
		Male		29.8	7.4
Latest	Mental	Female	0.021	52.7	10.4
		Male		53.6	9.7
	Physical	Female	0.001	37.8	11.3
		Male		41.6	11.2
Change	Mental	Female	0.001	2.6	11.9
		Male		0.4	11.3
	Physical	Female	0.072	11.4	12.3
		Male		12.6	12.4