title: [Validation of the Patient Health Questionnaire-9 Polish version in the hospitalised elderly population].
abstract: OBJECTIVE
  The first aim of this study was to evaluate the diagnostic validity of the Polish version of the PHQ-9 in hospitalised elderly Polish patients. The second aim was to find an optimal cutoff score for PHQ-9 to screen for a major depressive episode (MDE) (according to the Short Geriatric Depression Scale - SGDS).
  
  
  METHODS
  The PHQ-9, SGDS and a personal questionnaire were all administered to patients age 60 and above, who were hospitalised in our clinic. RESULTS; One hundred five people were examined (51.4% women) (mean age +/- SD 73.4 +/- 7.9 years). According to the PHQ-9 36(34.3%) people had MDE. The PHQ-9 showed significant positive internal consistency (Cronbach's alpha = 0.7) and the scores of each of its nine items positively correlated (0.31-0.68; p < 0.05) with the total score. The convergent validity with the SGDS was significantly positive (r = 0.58; p < 0.05). Using > 6 pts as the cutoff point, the sensitivity and specificity of the PHQ-9 for recognising MDE (according to SGDS) were found to be 70.4% and 78.2% respectively.
  
  
  CONCLUSIONS
  The Polish version of the PHQ-9 is a valid and useful tool for depression screening and a score of > 6 is the optimal cutoff point for the hospitalised elderly
authors.affiliation: Studenckie Koło Naukowe przy Katedrze i Klinice Chorób Wewnetrznych i Gerontologii UJ CM.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Tomaszewski
authors.forename: Magdalena
authors.initials: M
authors.lastname: Zarychta
authors.forename: Anna
authors.initials: A
authors.lastname: Bieńkowska
authors.forename: Elzbieta
authors.initials: E
authors.lastname: Chmurowicz
authors.forename: Wojciech
authors.initials: W
authors.lastname: Nowak
authors.forename: Anna
authors.initials: A
authors.lastname: Skalska
mesh_terms: D000368:Aged; D003863:Depression / Q000175:diagnosis* / Q000523:psychology; D005163:Factor Analysis, Statistical; D005260:Female; D015577:Geriatric Assessment / Q000379:methods*; D006304:Health Status; D006801:Humans; D007297:Inpatients / Q000523:psychology / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D011044:Poland; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D011788:Quality of Life / Q000523:psychology; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires / Q000592:standards*