Table 1.

Correlation of PACAP-38 level with different comorbidities

Comorbidities	Correlation coefficient (r)	Significance (p)
Hypertension	r = 0.034	p = 0.764
Diabetes mellitus	r = − 0.090	p = 0.428
Ischemic heart diseases	r = − 0.043	p = 0.708
Urinary retention	r = 0.084	p = 0.457
Incontinence	r = − 0. 089	p = 0.432
Gastrointestinal diseases	r = 0.144	p = 0.202
Thyroid gland diseases	r = − 0.088	p = 0.436
Malignant tumors	r = − 0.098	p = 0.386