Parotid gland-recovery after radiotherapy in the head and neck region - 36 months follow-up of a prospective clinical study

Table 3 Mean and standard deviation of relative salivary flow rate at 1, 6, 12, 24, and 36 months after radiotherapy.

Group		Patients (n)	mean RSFR (%)	SD (%)
I Dmean < 26 Gy	1 month after RT	34	55.6	32.71
	6 months after RT	35	50.2	36.44
	12 months after RT	27	59.7	36.46
	24 months after RT	19	65.8	34.10
	36 months after RT	14	74.3	27.85
II Dmean 26-40 Gy	1 month after RT	40	30.8	26.97
	6 months after RT	40	33.4	31.03
	12 months after RT	37	46.7	33.05
	24 months after RT	26	56.4	31.16
	36 months after RT	17	48.7	33.19
III Dmean > 40 Gy	1 month after RT	37	17.6	16.84
	6 months after RT	31	12.8	15.05
	12 months after RT	35	19.2	23.21
	24 months after RT	18	30.6	26.68
	36 months after RT	11	24.2	28.55

ISSN: 1748-717X