The Surgical Treatment for Portal Hypertension: A Systematic Review and Meta-Analysis

Table 3

Summary of risk of bias assessments of 16 RCTs.

Study	Randomized	Randomization method	Blinding	Allocation concealment	Intervention
Wang et al. [14]	Yes	Unclear	Unclear	Unclear	Shunt (15) versus devascularization (15)
Xu et al. [15]	Yes	Unclear	Unclear	Unclear	Shunt (11) versus devascularization (15)
Vons et al. [16]	Yes	Unclear	Unclear	Unclear	Portocaval shunt (6) versus Sugiura procedure (9)
Borgonovo et al. [17]	Yes	Unclear	Unclear	Unclear	Nonselective shunt (27) versus modified Sugiura procedure (27)
Xu et al. [18]	Yes	Unclear	Unclear	Unclear	SRS (13) versus PCDV (30) versus SRS + PCDV (23)
Zhao et al. [19]	Yes	Unclear	Unclear	Unclear	Sugiura procedure (39) versus SRS + PCDV
Gao et al. [20]	Yes	Table of random numbers	Unclear	Unclear	PCDV (100) versus SRS + PCDV (120)
Wang et al. [21]	Yes	Unclear	Unclear	Unclear	Devascularization + shunt (35) versus devascularization (29)
de Cleva et al. [22]	Yes	Unclear	Unclear	Unclear	EGDS (17) versus DSRS (19)
Strauss et al. [23]	Yes	Unclear	Unclear	Unclear	EGDS (25) versus DSRS (24) versus PSRS (24)
da Silva et al. [24–26]	Yes	Table of random numbers	Unclear	Unclear	EGDS (32) versus DSRS (30) versus PSRS (32)
Grace et al. [27]	Yes	Unclear	Unclear	Unclear	PSS (38) versus DSRS (43)
Warren and whitehead [28]	Yes	Unclear	Unclear	Unclear	Nonselective (29) versus selective shunt (26)
Conn et al. [10]	Yes	Unclear	Unclear	Unclear	DSRS (24) versus PSS (29)
Fischer et al. [29]	Yes	Card drawing	Unclear	Unclear	Selective (23) versus nonselective shunt (19)
Orozco et al. [30]	Yes	Unclear	Unclear	Unclear	Selective (27) versus nonselective shunt (28)

SRS: splenorenal shunt; PCDV: peripheral cardia divided vessel (division of left gastric vein/coronary vein); EGDS: esophagogastric devascularization and splenectomy; DSRS (DSS): distal splenorenal shunt; PSRS: proximal splenorenal shunt; PSS: portal-systemic shunt.