Table 7.

Correlations between GI/somatic symptom severity, GI-specific anxiety, and normalized global graph measures.

Sendai cohort
Normalized graph measure	IBS-SSS score colonic		VSI score
clustering coefficient	0.26		0.16
betweenness centrality	0.39*^		0.45*^
characteristic path length	0.04		−0.45*^
Gothenburg cohort
Normalized graph measure	IBS-SSS score colonic	IBS-SSS score extra-colonic	VSI score
clustering coefficient	−0.20	−0.26*	−0.04
betweenness centrality	0.01	0.14	0.04
characteristic path length	−0.24°	−0.24°	−0.12

Values are Spearman’s ρ; °p < 0.07 (uncorrected); *p < 0.05 (uncorrected); ^p < 0.05 (FDR corrected).

IBS, irritable bowel syndrome; IBS-SSS, IBS severity scoring system; VSI, visceral sensitivity index.