Table 1.

Values of different clinical and immunopathological variables according to ELISA positivity (^*).

Variable	ELISA positive	ELISA negative	p-value
Age (years)	(n = 82) 74.5 (68–80)	(n = 8) 68 (60.5–74.25)	0.35•
Indirect IF IgG	1,280 (400–2560)	640 (560–1600)	0.5•
Complement-binding test	40 (10–140)	5 (4.25–6.25)	< 0.001•
Cryosection assay score	3 (3–4)	3 (2.75–3)	0.44•
ABSIS cutaneous	(n = 68) 40.25 (17.62–72.56)	(n = 7) 9 (5.5–10)	0.01•
BPDAI global score	53.5 (30–76.25)	11 (8–29)	0.007•
BPDAI score of total skin involvement	49.5 (29.25–76.25)	11 (8–29)	0.009
BPDAI erosion activity	30 (20–49.25)	8 (6.5–26.5)	0.05•
BPDAI urticaria/ erythema	12.5 (4–32.25)	2 (0–3)	< 0.001•
Mucosal involvement	Yes (n = 11)	No (n = 0)	0.58+
ESR (mm/h)	(n = 66) 18.5 (11–32.75)	(n = 7) 15 (12.5–28)	0.72•

^•Mann-Whitney U test has been used.

⁺Fisher Exact test has been used.

^*ELISA positivity is defined as presence of a level of anti-BP180 NC16A autoantibodies and/or anti-BP230 autoantibodies ≥ 9 U/mL.