. 2018 Oct 1;9:2315. doi: 10.3389/fmicb.2018.02315

Table 2.

The richness and diversity estimators in HC and SFTS groups.

Parameter	SFTS^a	HC^a
Observed species value^b∗	121.19 ± 59.02	167.70 ± 38.11
Chao 1^b∗	162.40 ± 66.74	205.32 ± 44.02
Shannon index^b∗	2.43 ± 0.71	2.93 ± 0.57

^aSFTS, severe fever with thrombocytopenia syndrome; HC, health control. ^bDate are expressed as the mean ± SD. Observed species value (the number of OTUs), the species richness parameter (Chao1) and the species diversity parameter (Shannon index) were calculated using QIIME software. Independent t-test was used to test for significant difference in each variable among two groups. ^∗Significant difference (p < 0.05) between SFTS and HC groups.