Table 7.

Comparison of pre- and posttest results of control group

Problem	Groups	n	x̄	SS	Z**	P*
Numbness in the hand	Pretest	30	0.7	1.8	−4.3	<0.0001
	Posttest	30	2.5	2.1
Numbness in the foot	Pretest	30	2.6	2.1	−4.8	<0.0001
	Posttest	30	5.5	1.7
Tingling in the hand	Pretest	30	0.7	2.0	−3.6	<0.0001
	Posttest	30	1.9	2.3
Tingling in the foot	Pretest	30	2.3	2.4	−3.8	<0.0001
	Posttest	30	3.4	2.5
Discomfort	Pretest	30	4.1	1.8	−4.7	<0.0001
	Posttest	30	5.7	1.7
Cold sensitivity	Pretest	30	0.8	1.8	−4.5	<0.0001
	Posttest	30	3.6	2.0
Pain	Pretest	30	3.7	2.7	−4.8	<0.0001
	Posttest	30	6.3	1.5
Weakness	Pretest	30	3.2	2.6	−4.8	<0.0001
	Posttest	30	6.1	1.3
Loss of balance	Pretest	30	0.6	1.5	−2.4	0.02
	Posttest	30	1.1	2.3
Distress situation	Pretest	30	2.4	1.8	−4.8	<0.0001
	Posttest	30	5.6	1.2

*P<0.05, **Wilcoxon signed-rank test