Table 2 Summary statistics of OS and BCFI.

From: Ki-67 assessment in early breast cancer: SAKK28/12 validation study on the IBCSG VIII and IBCSG IX cohort

Clinical endpoints

With Chemotherapy

Without Chemotherapy

N

Number of events

Median

[95% CI]

N

Number of events

Median

[95% CI]

OS (in years)

82

20

16.9 [16.2, NA]

76

16

16.8 [15.9, NA]

BCFI (in years)

82

20

Not reached

76

17

Not reached

  1. Abbreviations: OS: overall survival, BCFI: breast cancer free interval.
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