Table 3.

PS Scores in Low and High TP Groups According to Skin Type, Skin Color and Melanin Index

		All Subjects		Low TP		High TP		p-valuea
		n	PS Score	n	PS Score	n	PS Score
Skin type	Ⅰ	65	3.12±1.64	36	3.44±1.89	29	2.72±1.18	0.068
	Ⅱ	136	2.74±1.61	72	2.88±1.78	64	2.58±1.38	0.276
	Ⅲ	43	1.56±1.08b	14	1.62±1.01c	29	1.53±1.14d	0.785
			p<0.001		p=0.005		p<0.001
L* value	Low	122	2.20±1.42	61	2.43±1.62	61	2.05±1.22	0.154
	High	122	3.06±1.69	61	3.37±1.88	61	2.67±1.42	0.023
			p<0.001		p=0.004		p=0.011
Melanin index	Low	122	3.20±1.79	61	3.61±2.05	61	2.70±1.41	0.006
	High	122	2.06±1.18	61	2.19±1.18	61	2.02±1.22	0.445
			p<0.001		p<0.001		p=0.005

Notes: Mean±SD. ^ap-value between high TP and low TP groups. ^bp<0.001. ^cp=0.002. ^dp=0.001 vs Skin type I.