Table 1. Demographic characteristics of patients and control groups and Ni sensitivity rates.

Ni, nickel

Demographic characteristics	Patient	Control	p
Age (mean±SS)	42.82  (±10.65735 )	39.77 (±11.21)	0.19
Gender (f/m)	24/26	18/22	0.77
Ni sensitivity (%)	40	17.5	0.03