Table 1.

Principal component scores by group and statistical significance of differences between groups

	QMH (n = 7)	DUW95 (n = 10)	DUW93 (n = 8)	KW P value for overall differences	MW P value for QMH vs. DUW93	MW P value for QMH vs. DUW95	MW P value for DUW93 vs. DUW95
PC1	−6.1 ± 1.4	−12.8 ± 2.8	21.3 ± 12.3	<0.001	<0.001	<0.001	<0.001
PC2	6.1 ± 1.3	−3.3 ± 2.6	−1.3 ± 1.4	<0.001	<0.001	<0.001	0.04

Scores are mean ± SD. KW, Kruskal–Wallis; MW, Mann–Whitney.