Improving scoring precision and internal construct validity of the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) using Rasch Measurement Theory

Alice Heaney; Stephen P  McKenna; Peter Hagell; Raj Sengupta

doi:10.3899/jrheum.180943

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Improving scoring precision and internal construct validity of the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) using Rasch Measurement Theory

Alice Heaney, Stephen P McKenna, Peter Hagell and Raj Sengupta

The Journal of Rheumatology May 2019, jrheum.180943; DOI: https://doi.org/10.3899/jrheum.180943

Alice Heaney

From Galen Research, The University of Manchester, and the Royal National Hospital for Rheumatic Diseases. Address correspondence to Alice Heaney, Galen Research, B1 Chorlton Mill, 3 Cambridge Street, Manchester, M1 5BY, UK. Email: aheaney@galen-research.com

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Stephen P McKenna

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Peter Hagell

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Raj Sengupta

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The Journal of Rheumatology

Vol. 50, Issue 3

1 Mar 2023

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Improving scoring precision and internal construct validity of the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) using Rasch Measurement Theory

Alice Heaney, Stephen P McKenna, Peter Hagell, Raj Sengupta

The Journal of Rheumatology May 2019, jrheum.180943; DOI: 10.3899/jrheum.180943

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Accepted manuscript

Improving scoring precision and internal construct validity of the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) using Rasch Measurement Theory

Alice Heaney, Stephen P McKenna, Peter Hagell, Raj Sengupta

The Journal of Rheumatology May 2019, jrheum.180943; DOI: 10.3899/jrheum.180943

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