Table 2 Comparisons of global graph measures between baseline and after coffee consumption.

Graph measures	Baseline	Coffee	P value	Baseline	Coffee	P value	Baseline	Coffee	P value	Baseline	Coffee	P value	Baseline	Coffee	P value
Graph measures	Delta			Theta			Alpha			Beta			Gamma
Average degree	13.920	15.058	0.001	12.005	12.988	0.013	10.782	11.378	0.043	12.145	13.033	0.027	14.852	15.649	0.061
Average strength	9.253	11.333	0.001	6.175	7.338	0.010	5.037	5.434	0.021	5.924	6.376	0.125	9.453	10.685	0.012
Radius	5.885	6.120	0.810	13.820	6.191	0.923	5.481	5.760	0.218	7.162	5.194	0.112	4.414	4.336	0.915
Diameter	10.702	9.697	0.586	17.776	10.809	0.948	9.598	9.773	0.720	11.061	9.066	0.459	7.952	7.544	0.510
Characteristic path length	2.799	2.377	0.218	4.071	3.056	0.183	3.520	3.377	0.228	3.598	3.116	0.054	2.449	2.182	0.066
Global efficiency	0.568	0.659	0.004	0.444	0.488	0.015	0.397	0.412	0.054	0.428	0.445	0.108	0.580	0.640	0.029
Local efficiency	1.718	2.255	0.001	1.057	1.267	0.019	0.826	0.884	0.026	0.945	1.004	0.208	1.696	1.958	0.049
Clustering coefficient	0.560	0.670	0.002	0.380	0.439	0.035	0.328	0.341	0.197	0.357	0.372	0.277	0.542	0.605	0.052
Transitivity	0.913	1.083	0.002	0.595	0.699	0.022	0.500	0.525	0.140	0.554	0.581	0.208	0.858	0.951	0.046
Modularity	0.063	0.026	0.010	0.188	0.137	0.001	0.258	0.241	0.329	0.195	0.171	0.101	0.070	0.036	0.011
Assortativity	0.111	0.050	0.188	0.160	0.077	0.105	0.156	0.123	0.223	0.122	0.080	0.116	0.025	0.019	0.202
Small-worldness	1.042	1.233	0.612	0.855	1.250	0.289	0.891	1.054	0.460	0.868	0.945	0.364	0.927	0.901	0.166

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