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. 2021 Jan 13;11:929. doi: 10.1038/s41598-020-79875-x

Table 6.

Topological parameters of the co-occurrence networks in the different grades of the dental and periodontal subscales, as well as oral health scale.

Oral health grade Dental health grade Periodontal health grade
OG0 OG23 DG23 PG23
Network coveragea 65.75% 43.42% 70.71% 77.17%
Number of nodes 265 175 285 311
Number of edges 1867 436 1447 2697
Number of positive correlations (%) 1055 (56.5%) 362 (83.1%) 915 (63.2%) 1468 (54.4%)
Number of negative correlations (%) 812 (43.5%) 74 (16.9%) 532 (36.8%) 1229 (45.6%)
Ratio of positive correlations and nodes 3.98 2.06 3.21 4.72
Ratio of negative correlations and nodes 3.06 0.42 1.86 3.95
Density 0.053 0.028 0.0357 0.055
Average number of neighbors 15.09 5.98 11.15 18.34
Characteristic path length 2.86 4.27 3.10 2.67
Clustering coefficient 0.37 0.37 0.30 0.35
Centralization 0.16 0.08 0.09 0.14
Modularity 0.36 0.62 0.36 0.33
Number of subnetworks 2 5 3 1
Number of modules 28 19 26 29
Number of modules with more than 3 nodes 9 9 4 9

aPercentage of OTUs present in the co-occurrence network with respect to the total number of OTUs.