Serum inflammatory markers by clinical outcomes. Inflammatory markers expressed as both log-transformed levels and quartiles. Clinical outcomes include serum IL-6 levels (A) and D-dimer levels (B) by immune status (CD4 category), (C) serum IL-6 levels by two-year mortality, (D) serum IL-6 levels by depression, and (E) serum IL-6 levels by HIV-associated dementia. (IL-6=Interleukin-6; * signifies p<0.05; ** signifies p<0.001; in each pie graph, quartile 1 is the smallest quartile, and quartile 4 is the largest quartile.)