Fig. 2From: Validation of the qi blood yin yang deficiency questionnaire on chronic fatigueLeast mean square plot for QBYY-Q scores. a Least mean squares of each QBYY-Q score according to the control, ICF, and CFS groups; b Least mean squares of QBYY-Q scores among the control, ICF, and CFS groups after adjustment for sex and age. Dotted lines denote the significant pairwise comparisons in which the P value was less than 0.05. Alphabetic notations (i.e., a, ab and b) above the standard error bars indicate the homogeneous groups resulting from Tukey’s HSD test for multiple comparisonsBack to article page