Table 1.

Patient characteristics

Variables	Patients with psoriasis (n)	C-PHQ-9(+) (n)	Positive rate (%)	X2 value	P value
Gender				0.009	0.926
Male	90	35	38.89
Female	58	23	39.66
Age (years)				0.032	0.858
≤60	126	49	33.56
>60	22	9	40.91
Disease duration (years)				8.984	0.003
≤10	91	27	29.67
>10	57	31	54.39
Marital status				0.814	0.666
Unmarried	44	15	34.09
Married	100	41	41
Divorced or widowed	4	2	50
Educational level				1.334	0.248
Junior high school and below	91	39	42.86
High school and above	57	19	33.33
Place of residence				0.613	0.434
City	58	25	43.1
Rural	90	33	36.67

C-PHQ-9, Chinese version of the Patient Health Questionnaire-9.