Table 1.

Summary of selected studies on gut microbiome and stroke.

Study type	Number of articles	Sample size range
Case control	8	[60–1,244]
Cohort	27	[50–3,359,653]
Clinical trial	1	[28]
Metagenomics (human)	11	[8–1,049,861]
Other (Cross sectional and Experimental)	26	[18–4,007]

Five of the studies were classified into more than one study type due to their methodology.