Table 2.

Quantitative Comparisons of Bacterial Networks for the Slow Walkers (1st Quartile of 400 m Walking Speed at Visit 4 (Q1 ≤ 0.899 m/s; n = 184) and Fast Walkers (Q4 ≥ 1.159 m/s; n = 185) by Jaccard index (j), Using the NetCoMi R Package

Centrality measures	Jacc (j)	p (J ≤ j)	p (J ≥ j)
Degree	0.700	.997	.020*
Betweenness centrality	0.462	.896	.241
Closeness centrality	0.667	.996	.019*
Eigenvector centrality	0.667	.996	.019*
Hub taxa	0.500	.889	.556

Note: (j) index shows similarity between sets of most central nodes and hubs between the 2 networks. P (J ≤ j) is the probability that j index takes a value less than or equal to the calculated index j for the present total number of genera in both sets. p (J ≥ j) is analogous, that is, j is greater than expected at random. To account for multiple testing, we applied the Benjamini–Hochberg method for adjustment. *Indicates significance at p < 0.05.