title: Depression Subscale of the Hospital Anxiety and Depression Scale applied preoperatively in spinal surgery.
abstract: OBJECTIVE
  To evaluate the accuracy of the Depression Subscale of Hospital Anxiety and Depression Scale (HADS-D) in spine surgery, comparing it to Beck Depression Inventory (BDI).
  
  
  METHODS
  In a cross-sectional study, the HADS-D and the BDI were applied to patients undergoing spine surgery for lumbar (n=139) or cervical spondylosis (n=17). Spearman correlation tests for HADS-D and BDI were applied. The internal consistency of HADS-D was estimated by Cronbach's alpha coefficient.
  
  
  RESULTS
  According to the BDI, the prevalence of depression was of 28.8% (n=45). The Spearman r coefficient between HADS-D and BDI was 0.714 (p<0.001). Cronbach's alpha for HADS-D was 0.795. The area of the ROC curve was 0.845. Using a cutoff for HADS-D >10, there was a sensitivity of 71.1%, specificity of 95.4%, and positive likelihood-ratio of 15.78.
  
  
  CONCLUSIONS
  HADS-D showed a strong correlation with BDI and good reliability. HADS-D is a good alternative for screening depression and assessing its severity.
authors.affiliation: Medical Faculty of the University of Caxias do Sul, Rua General Arcy da Rocha Nóbrega 401 / 602, Caxias do Sul, RS, Brazil. asdrubalmd@gmail.com
authors.forename: Asdrubal
authors.initials: A
authors.lastname: Falavigna
authors.forename: Orlando
authors.initials: O
authors.lastname: Righesso
authors.forename: Alisson Roberto
authors.initials: AR
authors.lastname: Teles
authors.forename: Natália
authors.initials: N
authors.lastname: Baseggio
authors.forename: Maíra Cristina
authors.initials: MC
authors.lastname: Velho
authors.forename: Leonardo Gilmone
authors.initials: LG
authors.lastname: Ruschel
authors.forename: Fabíola
authors.initials: F
authors.lastname: Abruzzi
authors.forename: Pedro Guarise da
authors.initials: PG
authors.lastname: Silva
mesh_terms: D001008:Anxiety Disorders / Q000175:diagnosis* / Q000523:psychology; D003430:Cross-Sectional Studies; D003866:Depressive Disorder / Q000175:diagnosis* / Q000523:psychology; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011300:Preoperative Care; D011569:Psychiatric Status Rating Scales; D015203:Reproducibility of Results; D057566:Self Report; D012680:Sensitivity and Specificity; D055009:Spondylosis / Q000523:psychology* / Q000601:surgery*; D011795:Surveys and Questionnaires