Associations of LIG4 and HSPB1 Genetic Polymorphisms with Risk of Radiation-Induced Lung Injury in Lung Cancer Patients Treated with Radiotherapy

Table 3

Univariate analysis of measurement data for the risk of grade ≥2 radiation pneumonitis in patients with lung cancer after radiation therapy.

Parameter	Number of patients	Median	Range
Age (years)	160	59	25~75	160
20 (%)	160	36	3~75	160
GTV (cm^3)	160	127.54	13.12~780.36	160

GTV: gross tumor volume; 20 = percentage volume of structure receiving dose of 20 Gy or more.