Table 8.

Results of the logistic regression analysis for contra-axillary visualization

Previous	Number of patients	Univariate			Multivariate (forward stepwise)a
		p value	Odds	Odds (95% CI)	p value	Odds	Odds (95% CI)
Breast surgery
No (base)	174				NS
Yes	99	0.001	33.349	4.349–255.751
Axillary node procedure
No (base)	208
Sentinel node	52	0.001	10.63	2.646–42.696	NS
Axillary  dissection	13	< 0.001	79.755	16.463–386.05
Adjuvant therapy
No (base)	234				NS
Hormone therapy	20	< 0.001	13.898	4.117–46.919
Chemotherapy	19	0.002	8.648	2.276–32.86
Breast radiation
No (base)	242
Yes	31	< 0.001	65.608	17.171–250.682	< 0.001	65.608	17.171–250.682

Logistic regression analysis was performed with contra-axillary node visualization as a dependent variable

CI confidence interval, NS not significant

^aMultivariate analysis was performed with a forward stepwise methods with a likelihood ratio