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Measuring depression in South Korea: Validity and reliability of a brief questionnaire in the Korean Cancer Prevention Study

 Hyoung Yoon Chang  ;  Yee-Jin Shin  ;  G. David Batty  ;  Dong-Koog Son  ;  Young Duk Yun  ;  Sun Ha Jee  ;  Yejin Mok  ;  Jonathan M. Samet 
 JOURNAL OF AFFECTIVE DISORDERS, Vol.150(3) : 760-765, 2013 
Journal Title
Issue Date
Adult ; Asian Continental Ancestry Group ; Depression/epidemiology* ; Depressive Disorder/epidemiology* ; Depressive Disorder, Major/epidemiology ; Female ; Humans ; Male ; Middle Aged ; Prevalence ; Reproducibility of Results ; Republic of Korea/epidemiology ; Surveys and Questionnaires*
Depression ; Epidemiology ; Prevalence ; Questionnaire
OBJECTIVE: To examine the validity and reliability of a new questionnaire for measuring depression in a South Korean population, and then to estimate the prevalence of depression in that country using this tool. METHODS: In total, 742,600 individuals (123,725 women), aged 30-64 years at entry into the Korean Cancer Prevention Study, completed a depression symptom in 1992 (baseline enrollment) and again in 1994. We examined the concurrent validity of the depression questionnaire by relating data from it to known socio-demographic and behavioral correlates of depression; its predictive capacity by relating scores from the questionnaire to the occurrence of future hospitalization for depression; and the test-retest reliability by comparing scores from its administration in 1992 to those in 1994. RESULTS: The prevalence of major depression was 7.5% in men and 10.0% in women. Factors significantly related to major depression were being younger (men), being female, not being married, of lower socioeconomic status, being a smoker, a heavy drinker, and not exercising regularly. Men (hazard ratio; 95% confidence interval: 2.0; 1.8, 2.2) and women (1.6; 1.3, 1.9) with questionnaire-ascertained depression experienced an elevated risk of hospitalization for the disorder during follow-up. The rates of agreement between responses to 1992 and 1994 surveys were 91.3% in men and 88.3% in women. CONCLUSIONS: These findings imply validity of the instrument and support its use in future studies directed at links of depression with somatic disease endpoints. LIMITATION: The questions do not have a specified time frame of reference.
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4. Graduate School of Public Health (보건대학원) > Graduate School of Public Health (보건대학원) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Psychiatry (정신과학교실) > 1. Journal Papers
Yonsei Authors
Mok, Ye Jin(목예진)
Shin, Yee Jin(신의진) ORCID logo https://orcid.org/0000-0001-8573-4342
Jee, Sun Ha(지선하) ORCID logo https://orcid.org/0000-0001-9519-3068
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