Table 2.

Serum concentrations of IFN-γ, IL-1β, and IL-6 (pg/ml) among patients with alopecia areata (AA), patients with nonsegmental vitiligo (NSV), and healthy controls and a comparison of p values in the Mann–Whitney test among AA patients, NSV patients, and healthy controls. Data were considered to be statistically significant at a value of p < 0.05.

	AA patients (n = 33)	NSV patients (n = 30)	Controls (n = 30)	p value (AA patients vs. control)	p value (NSV patients vs. control)	p value (AA patients vs. NSV patients)
IFN-γ, mean±SD (pg/ml)	237.68 ± 55.05	226.10 ± 50.18	199.59 ± 41.27	p = 0.007283	p = 0.038467	p > 0.05
IL-1β, mean±SD (pg/ml)	300.09 ± 87.97	329.72 ± 85.24	219.61 ± 60.89	p ≤ 0.001	p ≤ 0.001	p > 0.05
IL-6, mean±SD (pg/ml)	121.38 ± 31.01	144.95 ± 33.46	75.26 ± 21.15	p ≤ 0.001	p ≤ 0.001	p = 0.004485

Data are expressed in n, mean and standard deviation (SD). IL: interleukin; IFN: interferon.