Table 3 Cox regression predicting mortality risk for Women With Stage IV Breast Cancer (univariable and multivariable)

 Yes vs No

0.56(0.382-0.820)

0.003

0.53(0.36-0.78)

0.001

 Yes vs no

1.73 (1.18-2.54)

0.005

 Yes vs no

0.91 (0.62-1.32)

0.610

 Yes vs no

1.40 (0.44-4.43)

0.566

 Yes vs no

0.99 (0.68-1.46)

0.977

 ≤50 vs >50

0.65 (0.44-0.95)

0.026

 Menopause vs menses

1.21 (0.82-1.77)

0.344

 mass resection

1§

0.753

 core needle

1.32 (0.64-2.73)

0.457

 fine needle

1.43 (0.18-11.59)

0.736

 ductal

1§

0.824

 lobular

0.66 (0.16-2.69)

0.563

 others

1.11 (0.41-3.05)

0.835

 >5 cm vs ≤5 cm

1.00 (0.67-1.49)

0.981

 N₀

1§

0.259

 N₁

2.48 (1.00-6.11)

0.049

 N₂

1.95 (0.80-4.74)

0.142

 N₃

2.14 (0.91-5.05)

0.081

 Amplified

1§

0.557

 No-amplified

0.81 (0.55-1.21)

0.304

 Not known or equivocal(2+)

0.77 (0.31-1.93)

0.574

 + vs -

0.49 (0.321-0.7233)

<0.001

0.57 (0.36-0.89)

0.013

 >3 vs ≤3

1.751 (0.881-3.477)

0.11

 Yes vs no

0.45 (0.30-0.68)

<0.001

0.55 (0.35-0.86)

0.009

 No

1§

0.11

 Yes

0.54 (0.325-1.008)

0.035

 Unknown

0.00 (0.00-5.357E+159)

0.959

 No

1§

0.029

 Yes

0.61 (0.40-0.94)

0.025

 Unknown

1.35 (0.71-2.57)

0.357