Table 3.

Graph theory measures.

Measure	HC $\overline{\mathrm{x}}$ (SD)	EMCI $\overline{\mathrm{x}}$ (SD)	LMCI $\overline{\mathrm{x}}$ (SD)	AD $\overline{\mathrm{x}}$ (SD)	Value of p	Group differences
Path length	1.568 (0.61)	1.606 (0.61)	1.501 (0.577)	1.516 (0.585)	0.05	EMCI > LMCI; EMCI > AD
Cluster coeff.	0.783 (0.11)	0.776 (0.11)	0.793 (0.04)	0.796 (0.11)	0.52	–
Degree	67.5 (23.98)	51.689 (23.71)	60.534 (24.11)	59.431(24.14)	0.02	EMCI<LMCI; EMCI<AD

It displays results in graph measures: the mean, standard deviation, and the significant differences between groups in path length, cluster coeff. (Clustering coefficient) and degree. The EMCI, early mild cognitive impairment group, presented a higher path length and a lower degree in comparison with the other groups.