FIGURE 2.

Different preoperative plasma concentrations of homocysteine lead to different associations between postoperative plasma concentrations of CRP and postoperative delirium incidence. There are different associations between the postoperative plasma concentration of CRP and the postoperative delirium incidence in the participants, with the preoperative plasma concentration of homocysteine at the 10th percentile, 25th percentile, 50th percentile, 75th percentile, and 90th percentile. The data suggest that the preoperative plasma concentration of homocysteine can modify the association between the postoperative plasma concentration of CRP and the postoperative delirium incidence. CRP, C-reactive protein.