Table 1.

Preoperative demographics. SD = standard deviation. P-value obtained using the Mann-Whitney U test and Chi square test.

Group	n	Mean age of implantation Years (SD)	Sex M: F	Side of
Flex 31	34	62 (14.5)	20:14	16 Left
				18 Right
Flex 28	21	63 (9.8)	10:11	8 Left
				13 Right
Combined	55	62 (12.8)	30: 25	24 Left
				31 Right
p-value		0.81	0.58	0.58