Table 2.

Alpha diversity analyses of the fecal microbiome in Chagas disease phenotypes (indeterminate, cardiac, and megacolon) and controls.

	Control	Indeterminate	Cardiac	Megacolon	p-value*
Chao1 richness estimate	1881.4	1880.0	1809.9	1617.3	0.577
Shannon index	7.1	7.5	7.1	7.2	0.301
Simpson's diversity index	0.973	0.983	0.974	0.980	0.333
Number of observed species	1866	1848	1741	1566	0.751

^*Kruskal–Wallis H-test, p < 0.05 as the threshold for significance.