Table 2. The recipient-related risk factors examined in the original articles.

Author	Age	Gender	Race	Pulmonary Diagnosis	PAP	BLT vs SLT	BMI	CPB	Inhaled NO	Blood products transfusion	Mortality
King et al,7	√			√	√	√		√			√
Thabut et al,8	√	√		√		√		√			√
Christie et al,9	√	√	√	√	√	√			√
Whitson et al,10		√		√		√		√			√
Burton et al,11	√	√		√			√	√			√
Krenn et al,12	√	√		√	√	√		√			√
Kuntz et al,13		√	√	√		√	√
Felten et al,14	√	√					√	√	√	√
Fang et al,15	√	√	√		√	√		√	√	√
Allen et al,16	√	√		√	√	√		√	√		√
Shah et al,17	√	√	√	√	√	√		√
Samano et al,18	√	√				√		√			√
Diamond et al,19		√	√	√	√	√	√	√		√	√

PAP, pulmonary artery pressure; BLT, bilateral lung transplant; SLT, single lung transplant; BMI, body mass index; CPB, cardiopulmonary bypass; NO, nitric oxide.