Fig. 2.

The incidence for PSD according to the baseline irisin quartiles. Serum levels of irisin in quartile 1 (< 71.1 ng/mL), quartile 2 (71.1–95.9 ng/mL), quartile 3 (96.0–144.0 ng/mL), and quartile 4 (> 144.0 ng/mL). PSD post-stroke depression