Table 2.

Main effect of group in the global network metrics

	HC	svPPA	nfvPPA	HC vs svPPA p-value (effect size)	HC vs nfvPPA p-value (effect size)	svPPA vs nfvPPA p-value (effect size)
σ	0.52 ± 0.07	0.44 ± 0.05	0.51 ± 0.07	< 0.001 (1.34)	0.42 (0.16)	< 0.001 (−1.16)
λ	0.42 ± 0.01	0.44 ± 0.02	0.43 ± 0.02	< 0.001 (−1.78)	< 0.001 (−0.66)	0.001 (0.83)
γ	0.75 ± 0.09	0.67 ± 0.07	0.75 ± 0.09	< 0.001 (0.98)	0.95 (−0.01)	< 0.001 (−0.98)

All graph measure values are expressed as the area under the curve (AUC) across density range

σ, small-worldness index; λ, normalized characteristic path length; γ, normalized clustering coefficient; Eglob: global efficiency; HC: healthy controls; svPPA: semantic variant of primary progressive aphasia; nfvPPA: progressive nonfluent variant of primary progressive aphasia