Table 2. LASSO and multivariable logistic regression.

β value

z value

P value

OR value

2.5% CI

97.5% CI

Intercept

−1.7052

−8.803

< 2*10⁻¹⁶

0.182

0.123

0.263

−0.823227117

ER

0.85439

4.454

8.44*10⁻⁰⁶

2.35

1.624

3.45

0.129950422

Ultrasound of axillary lymph nodes

1.74307

7.216

5.37*10⁻¹³

5.715

3.589

9.277

1.242219708

CT scan of axillary lymph nodes

2.28296

7.143

9.11*10⁻¹³

9.806

5.385

19.009

1.475054322

Tumor size

0.0449

2.862

0.00421

1.046

1.016

1.081

0.004932393