Table 3. Mean bacterial diversity per phylum in the green tea and placebo groups at baseline and week 12.

	Group	Week	Diversity
All Phyla	GT	0	3.5±0.2
		12	3.4±0.2
	PL	0	3.1±0.3
		12	3.4±0.2
Bacteroidetes	GT	0	2.7±0.2
		12	2.5±0.2
	PL	0	2.6±0.2
		12	2.6±0.2
FAFV	GT	0	2.2±0.2
		12	2.1±0.2
	PL	0	2.2±0.2
		12	2.0±0.2
Proteobacteria	GT	0	2.1±0.2
		12	1.9±0.2
	PL	0	2.1±0.2
		12	1.9±0.2

Green tea (GT, n = 30) and Placebo (PL, n = 28), FAFV: Firmicutes, Actinobacteria, Fusobacteria and Verrucomicrobia. Shannon diversity index, Values are means ± standard errors. Data were analyzed by a mixed ANOVA. No significant differences between groups (GT vs. PL), no changes over time (baseline vs. week 12) and no significant interactions were observed between treatment (green tea or placebo) and time (baseline and week 12) for all phyla combined, Bacteroidetes, FAFV and Proteobacteria. All relevant P-values are p>0.05.