Characteristics of studies included in the meta-analysis.

<p><i>Notes</i> For <i>IL-1B-511</i> and <i>IL-1B+3954</i> polymorphisms, 11 = CC, 12 = CT, 22 = TT; for <i>IL-1RN VNTR</i> polymorphism, 11 = L/L, 12 = *2/L, 22 = *2/*2;</p><p>PB, Population-based; HB, Hospital-based; NA, not available;</p>a<p>, <i>p</i> value for Hardy-Weinberg equilibrium in controls; ^b, allele represented by 1; ^c, allele represented by 2;</p><p>CHD = coronary artery disease; ACS = acute coronary syndrome; MI = myocardial infarction.