Prevalence and factors associated with disturbed sleep in outpatients with ankylosing spondylitis

The Hospital Anxiety and Depression Scale

A. S. Zigmond, R. P. Snaith · Acta Psychiatrica Scandinavica · 1983 · 46.6K citations

Social Sciences, Psychiatry, Psychology +13

The Pittsburgh sleep quality index: A new instrument for psychiatric practice and research

Daniel J. Buysse, Charles F. Reynolds, T. H. Monk et al. · Psychiatry Research · 1989 · 34.7K citations

Medicine, Psychiatry, Psychology +16

Evaluation of Diagnostic Criteria for Ankylosing Spondylitis

Sjef van der Linden, Hans A. Valkenburg, A. Cats · Arthritis & Rheumatism · 1984 · 5.7K citations

Medicine, Orthopedic Surgery, Orthopedics +6

A new approach to defining disease status in ankylosing spondylitis: the Bath Ankylosing Spondylitis Disease Activity Index.

Sylvester Garrett, T Jenkinson, L G Kennedy et al. · PubMed · 1994 · 3.2K citations

Medicine, Rehabilitation Medicine, Physical Therapy +12

A new approach to defining functional ability in ankylosing spondylitis: the development of the Bath Ankylosing Spondylitis Functional Index.

A Cãlin, H Whitelock, L G Kennedy et al. · PubMed · 1994 · 1.8K citations

Medicine, Physical Medicine, Functional Assessment +14