Table 2.

Comparisons of salivary gland scintigraphic parameters by using the Wilcoxon rank-sum test.

	Group A	Group B	P value
Rate of change of maximum accumulation ratio [%]
Rt. parotid gland	29.31 ± 10.65	4.66 ± 5.50	<0.05
Lt. parotid gland	47.08 ± 14.34	4.19 ± 5.98	<0.05
Rt. submandibular gland	19.56 ± 6.23	1.96 ± 3.24	<0.05
Lt. submandibular gland	13.91 ± 4.77	0.16 ± 3.86	<0.05
Rate of change of washout ratio [%]
Rt. parotid gland	82.75 ± 38.56	18.58 ± 19.66	<0.05
Lt. parotid gland	185.73 ± 75.78	3.39 ± 11.87	<0.05
Rt. submandibular gland	60.73 ± 29.11	47.06 ± 17.96	0.45
Lt. submandibular gland	94.96 ± 33.13	18.58 ± 19.66	0.10