CXCL8 and delirium: The following inflammatory markers were higher in the delirium than non-delirium group: IL-6 (median 247.2 pg/mL, IQR 383.3 pg/mL vs. median 178.0 pg/mL, IQR 274.1 pg/mL, p = 0.009); IL-8 (median 101.0 pg/mL, IQR 108.3 pg/mL vs. median 74.0 pg/mL, IQR 97.0 pg/mL, p = 0.029); and TNF-α (median 12.3 pg/mL, IQR 6.2 pg/mL vs. median 8.9 pg/mL, IQR 5.6 pg/mL, p < 0.001).