Table 2.

Summary of surgical data for patient undergoing surgery at the NIH vs. outside NIH

Category	Sub–Category	NIH (N = 70) N,%	Outside NIH (N = 45) N,%	Total (N = 115) N,%	P value
Adrenal Mass Location	Right Side	22 (31)	13 (29)	35 (30)	0.9
	Left Side	24 (34)	16 (36)	40 (35)	0.9
	Bilateral	13 (19)	12 (27)	25 (22)	0.4
	Extra Adrenal	11 (16)	4 (9)	15 (13)	0.4
Partial versus Total Adrenalectomy	Partial Adrenalectomy	45 (64)	11 (24)	55 (48)	< 0.001
	Total Adrenalectomy	25 (37)	32 (71)	58 (50)	< 0.001
	Unknown	0 (0)	2 (4)	2 (2)	0.3
Laparoscopic vs. Open	Laparoscopic (including robotic)	39 (56)	8 (18)	47 (41)	< 0.001
	Open	31 (44)	36 (80)	67 (58)	< 0.001
	Unknown	0 (0)	1 (2)	2 (1)	0.4

Abbreviation: NIH = National institute of health