Association Study of the Caspase Gene Family and Psoriasis Vulgaris Susceptibility in Northeastern China

Table 1

Characteristics of the study participants.

Characteristic	cases	controls	P value
Total Number	540	612
Gender, n (%)			0.062
Male	332 (0.615)	342 (0.559)
Female	208 (0.385)	270 (0.441)
Age at onset, n (%)
≤40 years	439 (0.813)
>40 years	101 (0.187)
Mean age ± SD, years	44.23±12.44	45.47±12.73	0.238
PASI, n (%)
≤10	446 (0.826)
>10	94 (0.174)
Familial cases (N)	203 (0.376)
Sporadic cases(N)	337 (0.624)

N: number; PASI: psoriasis area and severity index.