Table 3 Estimated odds ratio (OR) with 95% confidence limits (CL) and the associated p-values adjusted for multiplicity by Benjamani-Hochberg [36] of the OTUs significantly associated with periodontitis when comparing 0–75% periodontitis teeth in the mouth

Spirochaetae

Novel Treponema 1

194.02

119.62

314.76

< 0.001

Spirochaetae

Treponema sp. COT-355

12.73

8.86

18.29

< 0.001

Synergistetes

Synergistales bacterium COT-244

3.47

1.99

6.04

< 0.001

Firmicutes

Peptostreptococcaceae bacterium COT-129

3.61

2.58

5.06

< 0.001

Firmicutes

Peptostreptococcaceae bacterium COT-021

1.47

1.28

1.69

< 0.001

Spirochaetae

Novel Treponema 2

3.48

2.03

5.98

< 0.001

Proteobacteria

Moraxella sp. FOT-087

0.18

0.16

0.20

< 0.001