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Table 4 Validation of parametric survival models for OS

From: Cost-effectiveness of nivolumab in patients with advanced renal cell carcinoma treated in the United States

Data source OS curve Proportion in OS (%) Median OS, month Mean OS, month
6 months 1 year 2 years 3 years 4 years 5 years 10 years 15 years 20 years 25 years
Dependent 1-knot spline normal (base-case analysis) NIVO 89.9 75.0 53.0 38.5 29.0 22.4 8.3 3.9 2.2 1.3 26.0 45.5
EVE 84.4 66.0 42.6 29.0 20.7 15.4 4.9 2.2 1.1 0.6 19.4 34.8
Independent Weibull curves NIVO 90.0 76.5 53.9 36.6 24.1 15.6 1.4 0.1 < 0.01 < 0.001 26.3 34.0
EVE 84.3 67.6 43.9 28.0 17.6 11.0 1.0 0.1 < 0.01 < 0.001 20.4 28.3
Dependent log-logistic curve NIVO 89.7 74.8 53.0 39.0 29.9 23.8 10.6 6.3 4.3 2.9 26.0 50.9
EVE 85.0 65.9 42.3 29.3 21.7 16.9 7.2 4.2 2.8 1.9 19.1 39.5
CheckMate 025 NIVO 89.2 76.0 25.0
EVE 81.2 66.7 19.55
CA209-003 NIVO 82.4 70.6 48.1 41.2 37.8 34.3 22.4a
EVE
  1. The median OS for 1 mg/kg dosing group was 29.3 months; for 10 mg/kg dosing group, the median OS was 18.8 months
  2. EVE, everolimus; NIVO, nivolumab; OS, overall survival
  3. aBoth 1 and 10 mg/kg