POMC and xerostomia: The correlation coefficients (r) for factors correlating with psychological stress were as follows: cortisol (r = 0.831), cortisol/ACTH ratio (r = 0.482), xerostomia (r = 0.334), ADH (r = 0.270), VAS (r = 0.249), PHOB (r = 0.243), DEP (r = 0.239), ANX (r = 0.232), SOM (r = 0.223), I-S (r = 0.223), ACTH (r = 0.216), and ANX (r = 0.181) (all p < 0.05).