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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: Curr Med Res Opin. 2016 Mar 2;32(6):991–996. doi: 10.1185/03007995.2016.1149056

Table 4.

Shape and scale parameters of the parametric regression of the log-logistic model on the Kaplan–Meier data.

Therapy PFS OS


Shape (γ) Scale (λ) Shape (γ) Scale (λ)
Pertuzumab + trastuzumab +
  docetaxel
0.6218719 0.052051 0.5436962 0.019241
Trastuzumab + docetaxel 0.5553811 0.074128 0.576501 0.024996
Capecitabine + lapatinib 0.5161625 0.03389 0.4647835 0.015981
Trastuzumab + lapatinib 0.5538419 0.082315 0.5882669 0.018985
T-DM1 0.6106105 0.104256 0.4743332 0.032557
Trastuzumab + capecitabine 0.0556305 0.115186 0.4513023 0.040966

PFS: progression-free survival; OS: overall survival; T-DM1: trastuzumab emtansine.