Table 2.

The comparison of three groups between the first NK activity assessment and after six months. The asterisk symbol denotes the significant difference by Wilcoxon signed rank test.

Group category	First value	Value after six months	Increasing percentage	SD of first value	SD after six months	P value of six months to first month	Percentage of increasing NK cytotoxicity >20%
IFN-γ	11.76%	18.06%	6.30%	10.08%	17.5%	0.003*	10.15%
IL-10	14.12%	15.52%	1.40%	14.12%	13.26%	0.117	0%
Control	14.90%	11.83%	−3.07%	13.97%	7.51%	NA	0%