Table 2 Univariate Cox proportional hazards model for survival until death from breast cancer at 3 years and 10 years.

Center

VGH

1.

1.

JGH

0.67 [0.35; 1.31]

.25

0.76 [0.51; 1.13]

.17

Age of diagnosis

< 50 years

1.

1.

≥ 50 years

1.10 [0.55; 2.16]

.79

0.97 [0.66; 1.44]

.89

Histological grade*, ^§

1

1.

1.

2

2.62 [0.88; 7.80]

.08

1.63 [0.97; 2.73]

.06

3

5.47 [1.84; 16.2]

.002

2.37 [1.36; 4.11]

.002

Tumor Size ^§

< 2 cm

1.

1.

≥ 2 cm

3.22 [1.42; 7.32]

.005

2.82 [1.78; 4.46]

.0001

Lymph nodes ^§

No

1.

1.

Yes

2.78 [1.37; 5.65]

.005

2.21 [1.46; 3.32]

.0002