Autologous Serum Skin Test as a Diagnostic Aid in Chronic Idiopathic Urticaria

Table 2

The autologous serum skin test results in relation to different clinical parameters.

Variable	Positive ASST, 𝑁=22 (40.7%)	Negative ASST, 𝑁=32 (59.3%)	𝑃 value
Age (years)
10–19	1 (1.9%)	6 (11.1%)
20–29	8 (14.8%)	10 (18.5%)	0.536
30–39	7 (13.0%)	7 (13%)
40–49	4 (7.4%)	4 (7.4%)
≥50	2 (3.7%)	5 (9.3%)
Sex
Female	15 (27.8%)	22 (40.7%)	0.966
Male	7 (13.0%)	10 (18.5%)
Score of severity
≤5	2 (3.7%)	0 (0%)
6–10	10 (18.5%)	15 (27.8)	0.406
≥10	10 (18.5%)	17 (31.5)
Distribution of lesions
All body	14 (25.9%)	30 (55.6%)	0.004
Face and extremities	8 (14.8%)	2 (3.7%)
Duration of disease (months)
≤12	13 (24.1%)	15 (27%)
13–24	3 (5.6%)	6 (11.1%)
25–36	1 (1.9%)	5 (9.3%)	0.578
37–48	0 (0%)	1 (1.9%)
49–60	1 (1.9%)	1 (1.9%)
>60	4 (7.4%)	4 (7.4%)