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. Author manuscript; available in PMC: 2015 Jul 22.
Published in final edited form as: Ann Rheum Dis. 2014 Jan 7;74(5):830–835. doi: 10.1136/annrheumdis-2013-203967

Table 3.

Details of the final 17 items of the ASAS HI

Summary statistics Person-Separation Index χ2 Probability Item location (mean±SD) Item fit residual (mean±SD) Person location (mean±SD) Person Fit residual (mean±SD)
ASAS Health Index (final 17 items) 0.82 0.73 0.0±1.8 0.0±1.2 0.0±1.8 −0.3±0.7
Categories Difficulty level Fit residual χ2 probability κ agreement ICF Origin
Pain −3.3 −0.9 0.77 0.6 b280 Patient proposal
Maintaining a body position −1.3 −0.5 0.67 0.7 d415 NHP, DFI, BASFI (adapted)
Moving around −2.8 −1.1 0.2 0.8 d455 DFI (adapted)
Toileting 1.6 1.8 0.2 0.6 d530 RAQoL
Energy and drive −1.9 −0.3 0.4 0.8 b130 Patient proposal
Motivation −1.2 0.2 0.3 0.7 b1301 MSQoL
Sexual functions 0.6 0.7 0.9 0.9 b640 Patient proposal
Driving 2.0 −0.6 0.8 0.8 d475 Patient proposal
Community life 1.8 −0.8 0.7 0.8 d910 NHP
Moving around 3.3 0.7 4.7 0.7 d455 HAQ-S (adapted)
Handling stress 0.1 −0.4 2.1 0.7 d240 RAQoL
Recreation and leisure 0.4 −1.5 7.2 0.7 d920 Proposal
Emotional functions −1.2 −1.5 5.3 0.8 b152 RAQoL, ASQoL
Washing oneself 1.8 1.6 2.8 0.4 d510 ASQoL, HAQ (adapted)
Economic self-sufficiency −0.01 2.2 2.9 0.8 d870 Environmental Status Scale (adapted)
Sleep −1.2 2.1 4.9 0.8 b134 NHP, RAQoL
Handling stress 1.2 −0.5 1.0 0.6 d240 GHQ (adapted)

ASAS HI, Assessment of SpondyloArthritis international Society Health Index; ASQol, Ankylosing Spondylitis Quality of Life; BASFI, Bath Ankylosing Spondylitis Functional Index; DFI, Dougados Functional Index; GHQ, General Health Questionnaire; HAQ-S, Health Assessment Questionnaire; ICF, International Classification of Functioning, Disability and Health; MSQoL, Multiple Sclerosis Quality of Life Inventory; NHP, Nottingham Health Profile; RAQoL, Rheumatoid Arthritis Quality of Life.