Table 2.

Multivariable regression model of factors influencing SLNB

Variables	Unadjusted OR (95% CI)	p Value	Adjusted OR* (95% CI)	p Value
Age (years)
<65	1 (reference)		1 (reference)
65–69	1.41 (0.17 to 11.66)	0.75	2.04 (0.21 to 19.69)	0.54
70–74	1.19 (0.14 to 9.93)	0.87	1.80 (0.18 to 17.63)	0.61
75–79	0.21 (0.06 to 0.68)	0.01	0.32 (0.07 to 1.48)	0.14
≥80	0.02 (0.01 to 0.06)	<0.001	0.04 (0 to 0.14)	<0.001
Race
White	1 (reference)		1 (reference)
Black	0.96 (0.47 to 1.96)	0.91	1.08 (0.44 to 2.66)	0.86
Insurance type
Managed care	1 (reference)		1 (reference)
Medicaid	0.17 (0.02 to 1.28)	0.09	0.18 (0.02 to 1.52)	0.12
Medicare	0.05 (0.01 to 0.19)	<0.001	0.21 (0.04 to 1.20)	0.08
Other/none	0.16 (0.03 to 0.81)	0.03	0.16 (0.03 to 0.89)	0.04
Surgeon
General	1 (reference)		1 (reference)
Breast	1.61 (0.78 to 3.31)	0.20	0.65 (0.22 to 1.92)	0.44
Medical center
Community	1 (reference)		1 (reference)
Academic	1.27 (0.64 to 2.50)	0.49	1.14 (0.42 to 3.10)	0.80

^*OR adjusted for race, age, insurance type, surgeon and medical center.

SLNB, sentinel lymph node biopsy.