Thomas A. Dewland et al. JACEP 2015;1:248-255 Serum Inflammatory Cytokine Levels by Race Box plots for the 9 measured inflammatory cytokine concentrations stratified by race. p value refers to the comparison of cytokine concentrations between white and black races. Numbers of participants with usable cytokine data are listed below each graph (2,864 individuals without prevalent AF were eligible for cytokine analysis; soluble receptor levels were measured in a random subsample of 1,367 participants). Outlier values have been omitted. CRP = C-reactive protein; HR = hazard ratio; IL = interleukin; PAI = plasminogen activator inhibitor; SR = soluble receptor; TNF = tumor necrosis factor. Thomas A. Dewland et al. JACEP 2015;1:248-255 American College of Cardiology Foundation