Table 4.

Means (standard deviation) and p-values using the Kruskal–Wallis test for the discriminative peaks.

Peak	Type 3	Type 42	Others	p-value
4673	0.052 (0.049)	0.003 (0.026)	0.011 (0.032)	<0.001*
5129	0.209 (0.200)	0.031 (0.094)	0.094 (0.150)	<0.001*
4999	0.769 (0.307)	0.350 (0.236)	0.455 (0.427)	<0.001*
5635	0.000 (0.000)	0.000 (0.000)	0.126 (0.266)	<0.001*
6466	0.145 (0.185)	0.003 (0.025)	0.118 (0.155)	<0.001*
2499	0.151 (0.120)	0.057 (0.083)	0.222 (0.207)	<0.001*
3390	0.030 (0.062)	0.132 (0.110)	0.103 (0.111)	<0.001*
3411	0.024 (0.040)	0.054 (0.065)	0.002 (0.011)	<0.001*
5036	0.115 (0.102)	0.032 (0.082)	0.076 (0.109)	<0.001*
6496	0.108 (0.151)	0.338 (0.210)	0.089 (0.174)	<0.001*
6781	0.065 (0.119)	0.247 (0.162)	0.108 (0.126)	<0.001*

^*Indicated that the p < 0.01.