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. Author manuscript; available in PMC: 2019 Jul 25.
Published in final edited form as: Cancer Immunol Res. 2018 Jan 30;6(3):288–294. doi: 10.1158/2326-6066.CIR-17-0063

Table 3.

a: Cox proportional hazards models were created for progression-free survival (PFS) with number
of treatment related adverse events (trAEs) included as a time-varying covariate. Listed are results from
both unadjusted model and adjusted models. Hazard ratio estimates marked ‘(+1)’ correspond to the
incremental effect of a unit increase in the relevant predictor.
Progression-Free Survival (Unadjusted Model)
Effect HR (95% CI) P
Number of trAEs (+1) 0.81 (0.65, 1.01) 0.067
Progression-Free Survival (Adjusted Model)
Effect HR (95% CI) P
Number of trAEs (+1) 0.75 (0.56, 0.99) 0.043
Female 0.80 (0.48, 1.35) 0.409
Age at Trial Start (+1y) 0.97 (0.95, 1.00) 0.036
Number of Previous Lines of Therapy (+1) 1.03 (0.86, 1.24) 0.760
PD-L1 Proportion Score (Ref: ≤1)
  1–49 1.13 (0.63, 2.02) 0.686
  ≥50 1.03 (0.46, 2.28) 0.948
EGFR Mutations 1.51 (0.80, 2.84) 0.204
Ever Smoker 0.93 (0.48, 1.80) 0.820
Squamous 1.01 (0.52, 1.95) 0.972
b: Cox proportional hazards models were created for overall survival (OS) with number of
treatment related adverse events (trAEs) included as a time-varying covariate. Listed are results from
both unadjusted model and adjusted models. Hazard ratio estimates marked ‘(+1)’ correspond to the
incremental effect of a unit increase in the relevant predictor.
Overall Survival (Unadjusted Model)
Effect HR (95% CI) P
Number of trAEs (+1) 0.77 (0.63, 0.94) 0.011
Overall Survival (Adjusted Model)
Effect HR (95% CI) P
Number of trAEs (+1) 0.75 (0.58, 0.96) 0.021
Female 0.92 (0.56, 1.51) 0.738
Age at Trial Start (+1y) 0.99 (0.96, 1.01) 0.285
Number of Previous Lines of Therapy (+1) 1.08 (0.91, 1.28) 0.363
PD-L1 Proportion Score (Ref: ≤1)
  1–49 1.18 (0.67, 2.06) 0.566
  ≥50 1.38 (0.63, 3.02) 0.420
EGFR Mutations 0.74 (0.40, 1.38) 0.345
Ever Smoker 0.72 (0.39, 1.34) 0.302
Squamous 0.98 (0.49, 1.96) 0.950
c: Logistic regression models were created for objective response with number of treatment
related adverse events (trAEs) included as a covariate. To control for guarantee bias, only the 65
patients on trial ≥9wks were included and only those trAEs that occurred ≤9wks after initiating therapy
were considered. Listed are results from both unadjusted model and adjusted models. ORRs are
compared with odds ratios and odds ratio estimates marked ‘(+1)’ correspond to the incremental effect
of a unit increase in the relevant predictor.
Objective Response Rate (Unadjusted Model)
Effect OR (95% CI) P
Number of trAEs (+1) 1.27 (0.81, 1.99) 0.306
Objective Response Rate (Adjusted Model)
Effect OR (95% CI) P
Number of trAEs (+1) 2.02 (0.87, 4.69) 0.101
PD-L1 Proportion Score (Ref: ≤1)
  1–49 3.94 (0.67, 23.10) 0.129
  ≥50 26.64 (2.85, 249.00) 0.004
EGFR Mutations 1.07 (0.18, 6.47) 0.937