Table 2 Univariate analysis

ALND versus SLNB

1.2972

0.9826-1.7125

0.0663

Age, years

1.0031

0.9929-1.0135

0.5497

Multifocality

1.5431

1.2549-1.8975

<0.0001

Grade (overall effect)

0.4190

  grade 1 versus grade 2

0.8072

0.5729-1.1373

0.2209

  grade 1 versus grade 3

0.8147

0.5674-1.1697

0.2667

  grade 2 versus grade 3

1.0092

0.7566-1.3463

0.9502

Tumor location (overall effect)

0.0027

  lateral versus medial

1.3955

1.0131-1.9223

0.0414

  lateral versus retroareolar

0.4181

0.2161-0.8091

0.0096

  medial versus retroareolar

0.2996

0.1501-0.5979

0.0006

Tumor size, mm

1.0455

1.0331-1.0580

<0.0001

LVI

7.2675

5.2014-10.1545

<0.0001

Ductal carcinoma

0.6305

Lobular carcinoma

0.4873

Estrogen receptor (negative vs positive)

0.5911

0.3824-0.9138

0.0180

Progesteron receptor (negative vs positive)

0.6335

0.4552-0.8816

0.0068

HER-2 (negative vs positve)

0.9869

0.1904-5.1146

0.9875