CB was positively correlated with patients’ SPB, DC, anxiety (r = 0.43, p < 0.01), and depression (r = 0.38, p < 0.01); it was also positively correlated with their own anxiety (r = 0.61, p < 0.01) and depression (r = 0.57, p < 0.01). Here, SFTPB is linked to depressive disorder.