Gut microbiome composition in patients with liver cirrhosis with and without hepatic encephalopathy: A systematic review and meta-analysis

Table 1 Agency for healthcare research and quality scoring table for studies

Ref.	Representativeness of the exposed cohort	Selection of the nonexposed cohort	Ascertainment of exposure	Demonstration that outcome of interest was not present at the start of the study	Comparability between exposed and nonexposed cohort	Assessment of outcome	Follow-up was long enough for outcomes to occur	Adequacy of follow-up of cohorts	Total score
Wang et al[9], 2023, China	1	1	1	1	2	1	1	1	9
Bajaj et al[12], 2012, United States	1	1	1	1	2	1	1	0	8
Bajaj et al[13], 2015, United States	1	1	1	1	1	1	1	1	8
Bajaj et al[14], 2019, United States	1	1	1	1	2	1	1	0	8
Bajaj et al[55], 2018, United States	1	1	1	1	1	1	1	1	8
Sung et al[15], 2019, China	1	1	1	1	2	1	1	1	9
Bloom et al[8], 2021, Japan	1	1	1	1	2	1	1	0	8
Saboo et al[56], 2022, United States	1	1	1	1	1	1	1	0	7
Yukawa-Muto et al[10], 2022, Japan	1	1	1	1	1	1	1	1	8
Li et al[57], 2022, China	1	1	1	1	2	1	1	0	8
Hua et al[58], 2022, China	1	1	1	1	1	1	1	0	7
Bajaj et al[59], 2022, United States	1	1	1	1	1	1	1	1	8
Yu et al[11], 2021, China	1	1	1	1	2	1	1	1	9
Baja et al[60], 2020, United States	1	1	1	1	2	1	1	1	9
Ahluwalia et al[16], 2016, United States	1	1	1	1	1	1	1	0	7
Zhang et al[17], 2013, China	1	1	1	1	1	1	1	1	8
Bajaj et al[61], 2012, United States	1	1	1	1	2	1	1	0	8