TABLE 2.

Maximum-Likelihood Parameter Estimates Along with R2 Values for Fitted AFT Models

ModelE(log T)σ^Embedded ImageR2
Population2.020.947Not applicable
Prognostic (PS, SUV)2.91 − 0.47 PS* − 0.19 − SUVbase0.85516.4
Predictive (δSUV)2.86 − 0.46 PS* − 0.19 SUVbase − 0.67 δSUVwk20.84019.7
Predictive (NL)3.02 − 0.45 PS* − 0.18 SUVbase − 0.75 NLPET¶wk20.79227.0
Predictive (NL, EGFR)2.75 − 0.40 PS − 0.12 SUVbase − 0.71 NLPET†wk2 + 0.95 EGFR0.80030.6
  • * P < 0.0001.

  • P < 0.001.

  • P < 0.01.

  • P < 0.05.

  • Prognostic model includes PS and SUVbase. Additionally, the 3 predictive models include, respectively, δSUVwk2, NLPET, and NLPET and EGFR.