title: Ankylosing Spondylitis patients with Type D personality have worse clinical status.
abstract: OBJECTIVE
  Type D personality was identified as an important factor that can explain the differences in clinical outcomes in various diseases. The aim of this study is to clarify the relationships between Type D personality and clinical status of patients with Ankylosing Spondylitis (AS).
  
  
  METHODS
  The scores of the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Ankylosing Spondylitis Disease Activity Score (ASDAS)-C-reactive protein (CRP), and erythrocyte sedimentation rate (ESR), the Bath Ankylosing Spondylitis Functional Index (BASFI), the 36-Item Short-Form Health Survey (SF-36), and 14-item Type D Scale (DS-14) were noted.
  
  
  RESULTS
  We found significantly higher levels of the BASDAI, the BASFI, and the SF-36 mental subscale scores in patients with Type D personalities compared to those who were Non-Type D (p < 0.05). The total DS-14 scores were found to be correlated with the scores of physical and mental subscales of SF-36, the BASDAI, the BASFI, ASDAS-CRP, and ESR (p < 0.05). In logistic regression analysis, the occurrence of Type D personality was found to be an independent predictor for disease activity of AS due to BASDAI and ASDAS-ESR (p = 0.016, OR, 95% CI = 2.98,1.23-7.22; p = 0.022, OR, 95% CI = 2.78,1.16-6.63 respectively).
  
  
  CONCLUSIONS
  Patients may over-rate self-reported measurements such as the BASDAI, BASFI, and SF-36 related to their interpersonal characteristics. Therefore, including the Type D personality, which is a stable construct in evaluating AS patients with brief and valid DS-14, may be noteworthy.
authors.affiliation: a Süleyman Demirel University, Faculty of Medicine , Department of Physical Medicine and Rehabilitation , Isparta , Turkey.
authors.forename: Esra
authors.initials: E
authors.lastname: Erkol İnal
authors.affiliation: b Süleyman Demirel University, Faculty of Medicine , Department of Psychiatry , Isparta , Turkey.
authors.forename: Kadir
authors.initials: K
authors.lastname: Demirci
authors.affiliation: c Süleyman Demirel University, Faculty of Medicine , Department of Internal Medicine , Division of Rheumatology , Isparta , Turkey.
authors.forename: Atalay
authors.initials: A
authors.lastname: Doğru
authors.affiliation: c Süleyman Demirel University, Faculty of Medicine , Department of Internal Medicine , Division of Rheumatology , Isparta , Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Şahin
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010552:Personality Assessment; D010808:Physical Examination; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000175:diagnosis / Q000523:psychology*; D011795:Surveys and Questionnaires; D063189:Symptom Assessment; D064415:Type D Personality
keywords: Ankylosing Spondylitis; BASDAI; Quality of life; Type D personality; mental health