Table 3. Patient Characteristics.

Characteristic	SRS			MVD			Difference (p-value)
	N	Mean	SD	N	Mean	SD
% Female	3144	60.9	8.0	1699	62.7	8.0	0.462
Mean Age	1944	67.6	4.5	3697	57.5	3.3	<0.001
Mean Follow-up (mos)	3477	31.7	19.2	3697	43.2	27.6	0.065
% With Previous Procedures	3013	21.1	10.4	3387	14.9	10.8	0.058