Table 3.

Convergent validity of iscorEB. Comparison with similar instruments and between the clinical and patient portions of the instrument.

iscorEB portion or domain	Comparison (N=31 unless specified otherwise) Spearman’s rho (p-value)
iscorEB-c versus BEBS (total score)
iscorEB-c total score	0.94 (<.0001)
Skin	0.90 (<.0001)
Mucosal	0.86 (<.0001)
Internal organ	0.73 (<.0001)
Laboratory abnormalities	0.83 (<.0001)
Complications / procedures	0.77 (<.0001)
iscorEB-p versus QOLEB (N=15)	0.91 (<.0001)
iscorEB-p versus CDLQI (N=15)	0.76 (0.0009)
iscorEB-c total score versus iscorEB-p	0.67 (<.0001)
Skin	0.61 (.0003)
Mucosal	0.77 (<.0001)
Internal organ	0.33 (.067)
Laboratory abnormalities	0.63 (.0002)
Complications / procedures	0.67 (<.0001)

BEBS- Epidermolysis Bullosa Severity score

QOLEB- Quality of Life Epidermolysis Bullosa

CDLQI- Childhood Dermatology Life Quality Index