Table 2.

The normality test of factor score by Kolmogorov-Smirnov test.

p value	Proposed method			Traditional method
	Factor 1	Factor 2	Factor 3	Factor 1	Factor 2	Factor 3
NL	0.20	0.12	0.53	0.51	0.19	0.82
vAD	0.00	0.55	0.29	0.54	0.44	0.30
AD	0.02	0.14	0.14	0.81	0.89	0.83