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Table 3 Univariable and multivariable linear regression results for change in Ki67 (∆Ki672week) in patients allocated to AI by HER2 status

From: Clinico-pathologic relationships with Ki67 and its change with short-term aromatase inhibitor treatment in primary ER + breast cancer: further results from the POETIC trial (CRUK/07/015)

 

ER + HER2-

ER + HER2 + 

Univariable

Multivariable

Univariable

Multivariable

β

Ci

p Value

β

Ci

p Value

Adjusted critical value

β

Ci

p Value

β

Ci

p Value

Adjusted critical value

Baseline Ki67 (log)

− 0.23

− 0.28 to − 0.17

 < 0.001

− 0.41

− 0.47 to − 0.35

 < 0.001

0.006

− 0.35

− 0.50 to − 0.20

 < 0.001

− 0.61

− 0.77 to − 0.46

 < 0.001

0.006

PgR Status

Positive

0

 < 0.001

0

 < 0.001

0.019

0

0.023

0

0.008

0.019

Negative

0.49

0.34–0.65

0.45

0.30–0.60

0.46

0.13–0.78

0.45

0.15–0.75

Unknown

0.13

0.02–0.23

0.11

0.01–0.22

0.15

− 0.17 to 0.46

0.07

− 0.22 to 0.36

Tumour grade (baseline)

1

0

 < 0.001

    

0

0.378

    

2

− 0.01

− 0.15 to 0.12

    

0.23

− 0.46 to 0.93

    

3

0.30

0.13–0.48

    

0.45

− 0.26 to 1.15

    

Not known

0.19

− 0.01 to 0.39

    

0.38

− 0.43 to 1.19

    

Tumour grade (2 week)

1

0

 < 0.001

(< 0.001)*

0

 < 0.001

0.013

0

 < 0.001

(< 0.001)*

0

 < 0.001

0.013

2

0.01

− 0.12 to 0.13

0.23

0.10–0.37

0.31

− 0.39 to 1.01

0.32

− 0.34 to 0.97

3

0.68

0.51–0.85

1.16

0.97–1.34

0.84

0.13–1.54

1.14

0.45–1.82

Tumour size (baseline)

0-2 cm

0

0.221

(0.015)*

    

0

0.094

(0.337)*

    

2-5 cm

0.09

− 0.01 to 0.19

    

0.20

− 0.07 to 0.47

    

 > 5 cm

0.05

− 0.30 to 0.40

    

− 0.95

− 2.24 to 0.34

    

Tumour size (2 week)

0-2 cm

0

0.952

(0.601)*

0

0.525

0.044

0

0.215

(0.249)*

0

0.201

0.031

2-5 cm

0.00

− 0.10 to 0.10

− 0.03

− 0.13 to 0.07

0.25

− 0.03 to 0.53

0.23

− 0.03 to 0.50

 > 5 cm

− 0.04

− 0.27 to 0.20

− 0.13

− 0.36 to 0.10

0.19

− 0.46 to 0.84

0.19

− 0.42 to 0.80

Histological type (baseline)

Ductal

0

0.452

    

0

0.639

    

Lobular

− 0.02

− 0.16 to 0.11

    

− 0.22

− 0.78 to 0.34

    

Other

0.16

− 0.10 to 0.42

    

0.22

− 0.64 to 1.07

    

Histological type (2 week)

Ductal

0

0.252

0

0.091

0.031

0

0.499

0

0.624

0.044

Lobular

− 0.10

− 0.23 to 0.03

− 0.14

− 0.27 to − 0.01

− 0.21

− 0.80 to 0.38

− 0.16

− 0.69 to 0.37

Other

0.08

− 0.16 to 0.31

0.06

− 0.17 to 0.29

− 0.54

− 1.66 to 0.57

− 0.37

− 1.36 to 0.62

Nodal status

N0

0

0.692

(0.773)*

0

0.880

0.050

0

0.111

(0.400)*

0

0.252

0.038

N1-3

0.03

− 0.08 to 0.14

0.01

− 0.10 to 0.12

− 0.16

− 0.47 to 0.16

− 0.09

− 0.38 to 0.21

N4 + 

− 0.05

− 0.21 to 0.11

− 0.03

− 0.20 to 0.13

0.28

− 0.09 to 0.64

0.23

− 0.14 to 0.59

Age group

 < 60

0.12

− 0.01 to 0.25

0.166

(0.992)*

0.10

− 0.02 to 0.23

0.292

0.038

0.24

− 0.13 to 0.60

0.285

(0.929)*

0.34

0.02–0.66

0.130

0.025

60–69

0

0

0

0

70–79

0.00

− 0.12 to 0.12

0.00

− 0.11 to 0.12

0.14

− 0.18 to 0.46

0.08

− 0.21 to 0.38

80 + 

0.12

− 0.05 to 0.28

0.09

− 0.07 to 0.24

0.45

− 0.08 to 0.97

0.32

− 0.15 to 0.79

Vascular invasion

Yes

0

0.100

0

0.033

0.025

0

0.734

0

0.809

0.050

No

− 0.05

− 0.16 to 0.06

− 0.06

− 0.17 to 0.06

− 0.11

− 0.39 to 0.17

0.04

− 0.24 to 0.32

Not reported

0.18

− 0.06 to 0.42

0.22

− 0.00 to 0.45

− 0.08

− 0.94 to 0.79

0.24

− 0.53 to 1.01

  1. *Test for trend
  2. ∆Ki672week = ln((Ki672week + 0.1)/(ln(Ki67baseline + 0.1))
  3. Adjusted critical values calculated using Benjamini Hochberg method. Significant p values following adjustment are highlighted in bold