Table 1 Demographic and clinical patient characteristics (N = 85).

Age (years), median (min-max, Q1, Q3)

53 (18-75, 44, 60)

Sex, n (%)

female

60 (70.6)

male

25 (29.4)

Fitzpatrick skin phototype, n (%)

I

1 (1.2)

II

64 (75.2)

III

19 (22.4)

IV

1 (1.2)

V, VI

0 (0)

CD69 up-regulation by Ni stimulation

AI*, median (min-max, Q1, Q3)

2.5 (0.3-61.0, 1.5, 5.7)

Positive skin reaction to Ni, n (%)

in PT on D3

21 (24.7)

in SPT on D3

37 (43.5)

Positive clinical history to Ni, n (%)

31 (36.5)