Thrombosis prophylaxis in pediatric liver transplantation: A systematic review

Table 2 Risk of bias and quality of the studies

Reference	Study design	Consecutive enrolment	Thrombosis as pre-defined outcome	Methods use to the diagnosis of thrombosis
Shackleton et al[31]	Retrospective	Yes	Yes, HAT	Clinical grounds and angiography and/or surgical exploration for confirmation
López et al[32]	Retrospective	Yes	No	Doppler US and angiography for confirmation, post mortem second confirmation
Millis et al[33]	Retrospective	Yes	Yes, PVT	Doppler US and angiography for confirmation
Jurim et al[34]	Retrospective	Yes	Yes, HAT	Not reported
Yandza et al[35]	Retrospective	Yes	Yes, HAT	Doppler US
Stevens et al[36]	Retrospective	Yes	Yes, HAT	Doppler US
Sabra et al[37]	Retrospective	Yes	Yes, PVT	Doppler US
Julka et al[38]	Retrospective	Yes	No	Doppler US and angiography for confirmation
Saad et al[39]	Retrospective	Yes	Yes, PVT	Doppler US

PVT: Portal vein thrombosis; HAT: Hepatic artery thrombosis; US: Ultrasonography.