Table 2.

Multivariable Analysis

Factor	Regression Coefficient ± s.e.	Hazard Ratio (95% C.I)1	p2
No. Positive SLN (1 or 2 vs. >2)	3.50 ± 0.82	33.16 (6.69–164.35)	<.0001
Age at Diagnosis (<70 vs. ≥70)	1.09 ± 0.43	2.98 (1.27–6.98)	.01
SLN Pattern (2–5 vs. 1)	1.12 ± 0.46	3.07 (1.23–7.62)	.02
Immune Suppression (No vs. Yes)	0.98 ± 0.46	2.66 (1.08–6.58)	.03

No. = number; SLN = sentinel lymph node

¹The first feature listed serves as the control; hazard ration = e^{regression coefficient}

²Wald test