Table 3.

The Type, Feature of Psoriasis and NCD Comorbidity Among Psoriasis Patients in Shanghai, China

Variables	Total Patients (n = 2102)	Male Patients (n = 1332)	Female Patients (n = 770)	χ2/t	P
Types of psoriasis, n (%)				0.26	0.97
Psoriasis vulgaris	2008 (95.5)	1273 (95.6)	735 (95.5)
Psoriasis arthropathica	38 (1.8)	23 (1.7)	15 (1.9)
Erythroderma psoriasis	43 (1.5)	20 (1.5)	12 (1.6)
Psoriasis pustulose	24 (1.2)	16 (1.2)	8 (1.1)
Initiation age of psoriasis, median (IQR)	33.0 (22.1–46.0)	33.9 (23.0–46.0)	32.0 (21.0–46.0)	5.95	0.02
Diseases duration (years), median (IQR)	9.0 (4.0–18.0)	10.0 (4.0–19.0)	7.0 (2.8–16.1)	26.22	0.00
Season of psoriasis recurrence, n (%)
Spring	417 (19.8)	246 (18.5)	171 (22.2)	4.29	0.04
Summer	282 (13.4)	180 (13.5)	102 (13.3)	0.03	0.86
Autumn	719 (34.2)	458 (34.4)	261 (33.9)	0.05	0.82
Winter	1542 (73.4)	1000 (75.1)	542 (70.4)	5.48	0.02
No seasonality	75 (3.6)	40 (3.0)	35 (4.6)	3.37	0.07
Familial aggregation of psoriasis, n (%)
Father	187 (8.9)	113 (8.5)	74 (9.6)	0.76	0.38
Mather	125 (6.0)	70 (5.3)	55 (7.1)	3.11	0.08
Siblings◊	167 (9.4)	106 (9.1)	61 (9.8)	0.22	0.64
Offspring○	80 (5.1)	41 (3.9)	39 (7.4)	8.92	0.00
NCD comorbidity, n (%)
Diabetes	277 (13.2)	198 (14.9)	79 (10.3)	9.04	0.00
Hypertension	598 (28.5)	438 (32.9)	160 (20.8)	35.10	0.00
Hyperlipidemia	491 (23.4)	379 (28.5)	112 (14.6)	52.69	0.00
Metabolic syndrome (Mets)	451 (21.5)	341 (25.6)	110 (14.3)	37.06	0.00

Notes: ◊The number of psoriasis patients with siblings was 1784 in total, 1162 for male and 622 for female. ○The number of psoriasis patients with offspring was 1584 in total, 1055 for male and 529 for female.

Abbreviations: IQR, interquartile range; NCD, non-communicable diseases; Mets, metabolic syndrome.