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Table 1 Characteristics of included studies assessing incidence and determinants of depression and/or anxiety in ankylosing spondylitis

From: The incidence of depression and anxiety in patients with ankylosing spondylitis: a systematic review and meta-analysis

Author, yearCountryStudy DesignSettinga/Data sourceSample SizeAge, mean (SD)Gender (% males)AS assessmentQuality assessment score
Wu, 2017 [19]United Statescohort studyadministrative health databaseAS: 1878AS: 52 (16)AS: 70%ICD-97
No AS: 156093No AS: 54 (16)No AS: 49%
Shen, 2016 [20]Taiwancohort studyadministrative health databaseAS: 2331AS: 36.5AS: 65%A-code, ICD-98
No AS: 9324No AS: 36.5No AS: 65%
Zou, 2016 [21]Chinacross-sectional (no comparator)outpatientAS: 40AS: 31.5 (10.1)AS: 70%ASAS criteria6
Kilic, 2014 [22]Turkeycross-sectional (w comparator)outpatientAS: 174AS: 38.3not reportedASAS criteria6
Nr-axSpA: 142Nr-axSpA: 33.9
Meesters, 2014 [23]Swedencohort studyadministrative health databaseAS: 1738AS: 54.5 (14.3)AS: 64%ICD-108
No AS: 967012No AS: not reportedNo AS: 48%
Sundquist, 2008 [24]Swedencohort studyadministrative health databaseAS: 5253Men: 43AS: 71%ICD 8–108
Women: 43
  1. Abbreviations: AS Ankylosing spondylitis, ASAS Assessment of SpondyloArthritis International Society classification, mNY modified New York, ACR American College of Rheumatology, ICD International Statistical Classification of Diseases and Related Health Problems, Nr-axSpA Non-radiographic axial spondylarthritis
  2. aSettings: Outpatient includes general practitioner medical clinics, rheumatology clinics, community clinics and inpatient includes admissions to a hospital setting