Cultural adaptation and validation of the scleroderma health assessment questionnaire into Arabic language

Egyptian Rheumatology and Rehabilitation

Table 5 Assessment of intra-rater and inter-rater reliability of HAQ-DI, SHAQ VAS, and SHAQ global

	^aIntraclass correlation coefficient (ICC)			Repeatability outcome
	Intraclass correlation coefficient (ICC)	95% confidence interval
	Intraclass correlation coefficient (ICC)	Lower limit	Upper limit
Intra-rater reliability
Pain VAS	0.864	0.765	0.921	Good
Digestive VAS	0.837	0.723	0.904	Good
Pulmonary VAS	0.875	0.788	0.927	Good
Reynaud’s VAS	0.916	0.855	0.951	Excellent
Digital ulcer VAS	0.890	0.813	0.936	Good
HAQ-DI	0.918	0.858	0.953	Excellent
SHAQ VAS	0.890	0.812	0.936	Good
SHAQ global	0.901	0.824	0.943	Excellent
Inter-rater reliability
Pain VAS	0.926	0.874	0.957	Excellent
Digestive VAS	0.841	0.729	0.907	Good
Pulmonary VAS	0.829	0.707	0.900	Good
Reynaud’s VAS	0.848	0.740	0.911	Good
Digital ulcer VAS	0.838	0.723	0.905	Good
HAQ-DI	0.999	0.998	0.999	Excellent
SHAQ VAS	0.880	0.796	0.930	Good
SHAQ global	0.917	0.858	0.951	Excellent
Tool			Cronbach’s alpha	No. of items
HAQ-DI			0.875	8
SHAQ global			0.845	13
SHAQ VAS			0.676	5

HAQ-DI Health Assessment Questionnaire Disability Index, SHAQ VAS scleroderma health assessment questionnaire visual analog scale
^aIntraclass correlation coefficient (ICC), was used to measure the strength of agreement between repeated measures