Table 2. Comparison of Average Stomatitis Severity Scores in Three Observations.

Severity of stomatitis	Group		P Valuea	Z Value
	Control	Experimental
	Median (Q3-Q1)	Median (Q3-Q1)
Before intervention	2.50 (3-2)	2.50 (3-2)	1	0.000
Day 7 after receiving mouthwash	3 (3-2)	1 (2-0)	0.001	-5.26
Day 14 after receiving mouthwash	3 (4-2)	0 (1-0)	0.001	-6.41
P value b	0.001	0.001	-	-

^a Mann-Whitney U test.

^b Friedman test.