Reliability and validity of the Chinese version of the autoimmune bullous disease quality of life (ABQOL) questionnaire

Table 2 Validity and reliability for the ABQOL

	Statistic	Result for 17 items questionnaire
Face and content validity	Forward-backward translation,　culture-adaption and review of the bullous experts panel	satisfactory
Convergent validity	Correlation with DLQI	r = 0.77, p < 0.001
Convergent validity	Correlation with SF-36	r = −0.62, p < 0.001
Discriminant validity	DLQI	p = 0.236
Discriminant validity	SF-36	p = 0.823
Internal consistency	Cronbach’s alpha	alpha = 0.88
Test-retest reliability	ICC	r = 0.87

Abbreviations: ABQOL Autoimmune Bullous Disease Quality of Life Questionnaire, DLQI Dermatology Life Quality Index, SF-36 Medical Outcome Study 36-item short-form questionnaire, ICC intraclass correlation coefficient

ISSN: 1477-7525