Table 3.

Pairwise intergroup comparison of anxiety scores values at during- and after-treatment

	Group	N	Mean rank	Sum of ranks	Mann-Whitney U	Z-value	p-value
During treatment anxiety score	A	8	11.00	88.00	12.0	-2.162	0.031a
	B	8	6.00	48.00
After treatment anxiety score	A	8	10.13	81.00	19.0	-1.667	0.095
	B	8	6.88	55.00
During treatment anxiety score	B	8	7.00	56.00	20.0	-1.403	0.161
	C	8	10.00	80.00
After treatment anxiety score	B	8	5.31	42.50	6.5	-2.912	0.004a
	C	8	11.69	93.50
During treatment anxiety score	A	8	10.31	82.50	17.5	-1.594	0.111
	C	8	6.69	53.50
After treatment anxiety score	A	8	7.19	57.50	21.5	-1.155	0.248
	C	8	9.81	78.50

N, number of subjects; Z, overall rank mean; ^astatistical significance (p-value < 0.05) using Mann-Whitney test