Table 1. Doses of Salivary Glands for All Patients and Subgroups with Different Grades of Late Xerostomia.

	All Patients	Grade 1	Grade 2	P
Patient number	23	13	10
Parotid glands (Gy)	40.82 ± 4.60 (30.71–50.48)	38.84 ± 3.92 (30.71–50.48)	43.40 ± 4.19 (33.16–50.17)	< 0.001
Submandibular glands(Gy)	59.78 ± 3.58 (53.20–72.55)	59.02 ± 3.81 (53.20–72.55)	60.77 ± 3.06 (54.98–67.60)	0.100