Table 1.

The ASAS-HI domains according to the EQ-5D and SF-6D. Participants indicated which domains of the EQ-5D and SF-6D matched the questions of the ASAS-HI and how adequately they covered those questions: directly (++), indirectly (+), not (−), or unclearly (?). The results shown were the most common responses from the participants.

ASAS-HI DomainASAS-HI Item DescriptionEQ-5DSF-6D
Most Relevant DomainCoverageMost Relevant DomainCoverage
PainPain sometimes disrupts my normal activitiesPain/discomfort++Pain++
Maintaining a body positionI find it hard to stand for longPain/discomfort+Physical functioning+
Moving aroundI have problems runningMobility+Physical functioning+
ToiletingI have problems using toilet facilitiesSelf-care++Social functioning+
Energy and driveI am often exhaustedUsual activities?Vitality++
MotivationI am less motivated to do anything that requires physical effortAnxiety/depression+Vitality, physical functioning+
Sexual functionsI have lost interest in sexUsual activities, anxiety/depression?Role limitation, mental health?
DrivingI have difficulty operating the pedals in my carMobility, usual activities+Physical functioning+
Community lifeI am finding it hard to make contact with peopleUsual activities+Social functioning++
Moving aroundI am not able to walk outdoors on flat groundMobility++Physical functioning++
Handling stressI find it hard to concentrateAnxiety/depression+Mental health, vitality+
Recreation and leisureI am restricted in traveling because of my mobilityMobility++Physical functioning+
Emotional functionsI often get frustratedAnxiety/depression?Mental health+
Washing oneselfI find it difficult to wash my hairSelf-care++Physical functioning+
Economic self-sufficiencyI have experienced financial changes because of my rheumatic disease—−−−
SleepI sleep badly at nightUsual activities−Vitality+
Handling stressI cannot overcome my difficultiesAnxiety/depression+Mental health+

  • ASAS-HI: Assessment of SpondyloArthritis Health Index; SF-6D: Short Form 6 Dimensions.