Meta-Analysis of Cytokine Gene Polymorphisms and Outcome of Heart Transplantation

Table 2

Risk of bias assessment.

Author, year	Ascertainment of GR	Ascertainment of non-GR	Genotyping controls	Population stratification	Confounding bias	Selective outcome reports	HWE
Azzawi et al. 2001 [11]	Yes	Yes	Unclear	NA	No	Yes	No
Bijlsma et al. 2002 [6]	Yes	Yes	Yes	NA	No	Yes	No
Plaza et al. 2003 [10]	Yes	Yes	Yes	NA	No	Yes	Yes
Gourley et al. 2004 [8]	Yes	Yes	Yes	Unclear	No	Yes	No
McDaniel et al. 2004 [9]	Yes	Yes	Yes	Unclear	No	Yes	No
Filippo et al. 2006 [7]	Yes	Yes	Yes	Unclear	No	Yes	No
Girnita et al. 2008 [12]	Yes	Yes	NA	Yes	Yes	Yes	No

NA: not available.