. Author manuscript; available in PMC: 2022 Aug 24.

Published in final edited form as: J Thorac Oncol. 2020 Jun 26;15(10):1682–1690. doi: 10.1016/j.jtho.2020.06.014

Table 3.

Dosimetric Univariable and Multivariable Analysis for Time to Earliest Grade 3 or Higher Cardiac Event

	Univariable Cox Regression Analysis			Cox Multivariable Regression

Variable	HR	95%CI	p-value	HR	95%CI	p-value

Heart V5_Gy (%)	1.008	1.000–1.016	0.042
Heart V30_Gy (%)	1.014	1.002–1.026	0.020
Heart V50_Gy (%)	1.036	1.000–1.074	0.050
Mean heart dose (Gy)	1.034	1.006–1.062	0.015	1.034	1.006–1.062	0.015

Abbreviations: C-index, concordance index; HR, hazard ratio.