Table 9. Subject Homogeneity Verification Result in the PP Population

Item		Control Group(n=29)		Treatment Group(n=33)		χ² or t or Z	p-value
Item		n(%)	Mean±SD	n(%)	Mean±SD	χ² or t or Z	p-value
Gender^a	Male	4(13.8%)		9(27.3%)		1.692	0.193
Gender^a	Female	25(86.2%)		24(72.7%)		1.692	0.193
Drug history^a	No	26(89.7%)		33(100%)		3.587	0.058
Drug history^a	Yes	3(10.3%)		0(0%)		3.587	0.058
Medical history^a	No	26(89.7%)		33(100%)		3.587	0.058
Medical history^a	Yes	3(10.3%)		0(0%)		3.587	0.058
Age^b			42.759±3.934		42.848±4.221	-0.086	0.931
No. of hair^b			101.69±17.96		107.424±21.603	-1.127	0.264

Chi-square test
Independent two-sample t-test
^*p<0.05, ^**p<0.01, ^***p<0.001