Table 4 Multivariate Cox regression analysis.

From: Early treatment-related neutropenia predicts response to palbociclib

Covariate

HR (95% CI)

p Value

All patients

 Any NTP in C1–2

     No

  

     Yes

0.49 (0.34–0.70)

<0.001

 ECOG PS

     0

  

     1

1.51 (1.12–2.04)

0.007

 # Prior lines of therapy

     1–2

  

     3+

1.39 (1.02–1.87)

0.033

Breast patients

 Any NTP in C1–2

     No

  

     Yes

0.19 (0.07–0.52)

0.001

 Age

     <Median

  

     ≥Median

0.50 (0.29–0.89)

0.017

 Immediate prior line chemo

     No

  

     Yes

1.76 (1.02–3.03)

0.042

Non-breast patients

 Any NTP in C1–2

     No

  

     Yes

0.56 (0.37–0.83)

0.004

 ECOG PS

     0

  

     1

1.68 (1.15–2.43)

0.006

 # Prior lines of therapy

     1–2

  

     3+

1.81 (1.22–2.70)

0.003