Rifaximin vs conventional oral therapy for hepatic encephalopathy: A meta-analysis

Table 2 Risk of bias in the published controlled trials

Author	Allocation system described	Allocation concealment	Blinding			Handling of missing data	Power calculation for number of patients to be treated
			Patient	Personnel	Assessor
Bucci et al[35]	Yes	Yes	Yes	Yes	NA	Unclear	No
Di Piazza et al[33]	No	No	Yes	Yes	NA	Unclear	No
Fera et al[37]	No	Yes	Yes	No	NA	Unclear	No
Festi et al[17]	No	No	No	No	NA	Unclear	No
Loguercio et al[39]	No	No	Yes	No	NA	Unclear	No
Mas et al[36]	Yes	Yes	Yes	Yes	NA	Unclear	No
Massa et al[18]	No	Yes	Yes	Yes	NA	Unclear	No
Miglio et al[38]	No	Yes	Yes	Yes	NA	Unclear	No
Paik et al[21]	Yes	Yes	Yes	No	NA	Unclear	No
Parini et al[34]	Yes	Yes	Yes	No	No	Unclear	No
Pedretti et al[25]	Yes	Yes	Yes	Yes	NA	Unclear	No
Song et al[32]	NA	NA	NA	NA	NA	NA	NA

NA: Not available.