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Table 1 Calculated model parameter values and 95% confidence intervals (in parentheses).

From: A comparison of dose-response characteristics of four NTCP models using outcomes of radiation-induced optic neuropathy and retinopathy

Data set Parameter Logistic Log-logistic Poisson Probit
RION, twice daily* D50, Gy 96.3 (69.8,∞) 125.2 (71.8, ∞) 119.0 (75.6, ∞) 104.4 (71.7, ∞)
  γ 1.56 (0.49,3.18) 0.80 (-0.09,2.38) 0.93(0.42,1.65) 1.27(0.47,2.42)
RION, once daily D50, Gy 94.2 (80.5,146.8) 104.7 (82.8,254.2) 102.0 (83.9,161.9) 96.7 (81.5,150.0)
  γ 1.41 (0.84,2.16) 0.88 (0.34,1.60) 0.99 (0.66,1.41) 1.25 (0.78,1.85)
RIRP, twice daily D50, Gy 72.2 (63.9,115.7) 74.2 (63.8,188.7) 75.0 (63.6,133.5) 73.0 (63.8,120.9)
  γ 2.16 (0.98,3.97) 1.66 (0.42,3.47) 1.51 (0.72,2.73) 1.91 (0.89,3.43)
RIRP, once daily D50, Gy 72.2 (64.0,91.0) 74.0 (63.1,108.1) 73.0 (62.9,94.4) 72.4 (63.9,91.6)
  γ 1.20 (0.73,1.80) 0.84 (0.42,1.40) 0.96 (0.64,1.34) 1.12 (0.71,1.62)
  1. *Abbreviations: RION - radiation-induced optic neuropathy; RIRP - radiation-induced retinopathy.