title: The Vietnamese version of the Self Reporting Questionnaire 20 (SRQ-20) in detecting mental disorders in rural Vietnam: a validation study.
abstract: BACKGROUND
  There is a need to develop instruments to measure mental disorders in developing countries because mental disorders are increasingly being recognised as a major public health problem. There has been no previous study in Vietnam validating screening instruments for mental health problems.
  
  
  OBJECTIVE
  To adapt and to validate the Self Reporting Questionnaire-20 (SRQ-20) in the Vietnamese community.
  
  
  METHODS
  A Vietnamese version of the SRQ-20 was developed and tested in 52 persons in a district hospital sample and 485 persons in a community sample. The psychiatrists' diagnoses were taken as the validity criterion. Receiver Operating Characteristic (ROC) analysis was performed to identify the optimal cut-off value. The area under the ROC curve (AUC) was calculated to assess the performance of SRQ in different sociodemographic groups.
  
  
  RESULTS
  In the district hospital sample, the optimal cut-off score was 5/6 with a sensitivity of 85%, a specificity of 46% and an AUC of 0.74 (95% CI: 0.59-0.89). In the community sample, it was 6/7 with a sensitivity of 85%, a specificity of 61% and AUC of 0.86 (95% CI: 0.81-0.93). In terms of AUC, SRQ performed significantly better in the age group 18-24 years as compared with other ages and with single persons as compared with widowed or divorced people.
  
  
  CONCLUSIONS
  The SRQ-20 was found feasible to use and adapt to the Vietnamese setting. We confirmed the value of this instrument for use in developing countries, but the optimal cut-off limit has to be assessed and determined according to local conditions.
authors.affiliation: Faculty of Public Health, Hanoi Medical University, Vietnam. kbgiangvn@yahoo.com
authors.forename: Kim Bao
authors.initials: KB
authors.lastname: Giang
authors.forename: Peter
authors.initials: P
authors.lastname: Allebeck
authors.forename: Gunnar
authors.initials: G
authors.lastname: Kullgren
authors.forename: Nguyen Van
authors.initials: NV
authors.lastname: Tuan
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology*; D008875:Middle Aged; D015995:Prevalence; D015203:Reproducibility of Results; D012424:Rural Population / Q000706:statistics & numerical data*; D012649:Self Concept; D011795:Surveys and Questionnaires; D014744:Vietnam