. 2017 Sep 8;3:32. doi: 10.1038/s41523-017-0033-7

Table 2.

Multivariable analysis on the entire cohort (chemotherapy-treated and untreated). The analysis evaluated the association between the variables and distant recurrence

Variable^a	Comparison	Hazard ratio	P-value
Variable^a	Comparison	(95% confidence intervals)	P-value
Size	≥2 vs. <2 cm	1.8 (1.0–3.3)	0.04
Nodal status	1–3 positive nodes vs. N1mi	0.86 (0.48–1.6)	0.63
RS Group	<18 vs. ≥31	0.23 (0.11–0.50)	0.001
	18–30 vs. ≥31	0.42 (0.20–0.86)

RS Recurrence Score

^a The RS group remained a significant variable (P < 0.001) when age and tumor grade were also included in the multivariable model