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Association between serum 25-hydroxyvitamin D concentrations and depressive symptoms in an older Korean population: A cross-sectional study

 Bo Mi Song  ;  Hyeon Chang Kim  ;  Yumie Rhee  ;  Yoosik Youm  ;  Chang Oh Kim 
 JOURNAL OF AFFECTIVE DISORDERS, Vol.189 : 357-364, 2016 
Journal Title
Issue Date
Aged ; Aged, 80 and over ; Body Mass Index ; Cross-Sectional Studies ; Depression/blood* ; Dietary Supplements ; Female ; Geriatric Assessment ; Humans ; Male ; Parathyroid Hormone/blood ; Republic of Korea ; Rural Population ; Urban Population ; Vitamin D/analogs & derivatives* ; Vitamin D/blood ; Vitamin D Deficiency/blood*
Depression ; Korean ; Older adults ; Vitamin D
BACKGROUND: This study aims to examine associations between serum 25-hydroxyvitamin D [25(OH)D] concentrations and depressive symptoms in an older Korean population. METHODS: The study used data from the Korean Urban Rural Elderly study, which enrolled 2942 participants aged 65 years or older from urban and rural communities. After excluding those treated with antidepressants, we conducted cross-sectional analysis of 2853 participants (962 men and 1891 women). Serum 25(OH)D was analyzed as both a continuous and categorized variable. Depressive symptoms were assessed using the Korean version of the Geriatric Depression Scale - Short Form. Multivariate logistic regression analyses were conducted to examine relationships between serum 25(OH)D and depressive symptoms for men and women separately. RESULTS: In men, ORs (95% CIs) for depressive symptoms were 1.74 (0.85, 3.58), 2.50 (1.20, 5.18), and 2.81 (1.15, 6.83) for those with a 25(OH)D concentration of 20.0-29.9, 10.0-19.9, and <10.0ng/mL, respectively (P-trend=0.013), compared with those with a 25(OH)D concentration of ≥30.0ng/mL, after adjustment for study year, month of assay, age, parathyroid hormone, body mass index, number of comorbidities, smoking status, alcohol intake, exercise, sleep duration, income, education, cohabitation status, and residential area. In women, the associations between 25(OH)D and depressive symptoms were significant neither before nor after adjustment. LIMITATIONS: Due to the cross-sectional study design, causal association is uncertain. Intake of vitamin D supplements and outdoor activity were not examined. CONCLUSIONS: Our findings suggest that lower concentrations of vitamin D are independently associated with depressive symptoms in older Korean adults.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Preventive Medicine and Public Health (예방의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chang Oh(김창오) ORCID logo https://orcid.org/0000-0002-0773-5443
Kim, Hyeon Chang(김현창) ORCID logo https://orcid.org/0000-0001-7867-1240
Rhee, Yumie(이유미) ORCID logo https://orcid.org/0000-0003-4227-5638
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