. Author manuscript; available in PMC: 2022 May 1.

Published in final edited form as: Int J Radiat Oncol Biol Phys. 2018 Jan 31;110(1):137–146. doi: 10.1016/j.ijrobp.2018.01.044

Table 4.

Summary of dose-response parameters, logistic model, for local control and overall survival calculated for the included studies

Data	D₅₀, Gy (95% CI)	γ50 (95% CI)	P (median splits)

Local control, 1 y	25.5 (3.0, ∞)	0.17 (−0.09, 0.45)	.0685
Local control, 2 y	45.1 (39.1, 71.5)	0.56 (0.27, 0.85)	.0015
Local control, 3 y	49.8 (43.7, 72.8)	0.94 (0.49, 1.43)	.0028
Overall survival, 1 y	30.4 (at limit)	0.17 (−0.32, 0.66)	1
Overall survival, 2 y	46.9 (38.8, ∞)	0.74 (0.25, 1.30)	.1291

Abbreviation: CI = conﬁdence interval; D₅₀ = dose for 50% control or survival; γ₅₀ = normalized slope parameter.