CCL2 and delirium: According to the post hoc pairwise comparisons, median postoperative MCP-1 concentration was increased among women who developed delirium compared to non-delirium women (678.46 ng/mL; IQR: 408.64–816.40 vs. 366.54 ng/mL; IQR: 273.18–520.03, p = 0.002), whereas there were no MCP-1 differences between men with and without delirium (p = 0.207).