Table 2.

The relationship between clinical factors and Oncotype DX

Variable	Univariate logistic regression		Multivariate logistic regression
	OR (95% CI)	p	OR (95% CI)	p
Age, years	0.987 (0.953–1.021)	0.465	NA	NA
Tumor size	1.013 (0.788–1.314)	0.917	NA	NA
Tumor grade	2.858 (1.367–3.989)	0.011	2.110 (1.137–3.957)	0.018a
PR	2.258 (0.067–0.489)	0.502	NA	NA
HER 2	2.186 (1.162–4.165)	0.016a	2.002 (1.206–3.823)	0.016a
Ki-67	0.902 (0.543–1.301)	0.545	NA	NA
Rad-score	5.186 (4.262–6.386)	0.006a	6.002 (3.947–7.002)	0.008a

CI, confidence interval; HER 2, Human epidermal growth factor receptor type 2; NA, Not available; OR, Odds ratio; PR, Progesterone receptor.

These variables were eliminated in the multivariate logistic regression model in training set, so the OR and p values were not available.

^ap < 0.05.