title: Socioeconomic status and other related factors of seasonal influenza vaccination in the South Korean adult population based on a nationwide cross-sectional study.
abstract: OBJECTIVE
  We investigated the association between seasonal influenza vaccination in South Korea and socioeconomic status (SES) as well as other potential related factors.
  
  
  METHODS
  The study was based on data obtained in the Korea National Health and Nutrition Examination Survey from 2010 to 2011. Education level and household income were used as indicators for SES. Univariate and multiple logistic regression analyses were used to evaluate SES and other demographic variables as related factors for influenza vaccination, the primary outcome.
  
  
  RESULTS
  Higher household income was positively associated with higher vaccine uptake in the younger (19-49 years) group [adjusted odds ratio (aOR) 1.55, 95% confidence interval (CI) 1.08-2.23], whereas the low-income and low-education group had increased vaccination coverage than the middle-income and middle-education group in the older (≥ 50 years) group (aOR 1.36, 95% CI 1.09-1.69). Current smokers tend to be unvaccinated in all age groups. Among individuals aged ≥ 50, older age, mild to moderate alcohol consumption, regular exercise, and having co-morbidities were positively associated with vaccination, while those who self-reported their health status as good were less likely to be vaccinated.
  
  
  CONCLUSIONS
  The relationship between SES and seasonal influenza vaccination coverage differed between the age groups throughout the adult South Korean population. Public health policies need to address these inequalities.
authors: Department of Radiology, College of Medicine, Korea University, Seoul, South Korea.
authors: Kyu-Chong
authors: KC
authors: Lee
authors: Department of Biostatistics, College of Medicine, Catholic University, Seoul, South Korea.
authors: Kyungdo
authors: K
authors: Han
authors: Department of Neuroscience, College of Medicine, Korea University, Seoul, South Korea.
authors: Jin Yong
authors: JY
authors: Kim
authors: Department of Family Medicine, College of Medicine, Korea University, Seoul, South Korea.
authors: Ga Eun
authors: GE
authors: Nam
authors: Department of Family Medicine, SahmYook Medical Center, Seoul, South Korea.
authors: Byoung-Duck
authors: BD
authors: Han
authors: Department of Family Medicine, College of Medicine, Korea University, Seoul, South Korea.
authors: Koh-Eun
authors: KE
authors: Shin
authors: School of Physician Assistant Studies, College of Health Professionals, Pacific University, Hillsboro, Oregon, United States of America.
authors: Anna
authors: A
authors: Lee
authors: Department of Family Medicine, College of Medicine, Korea University, Seoul, South Korea; Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America; Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea.
authors: Byung Joon
authors: BJ
authors: Ko
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007182:Income; D007252:Influenza Vaccines / Q000627:therapeutic use; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D056910:Republic of Korea / Q000453:epidemiology; D012621:Seasons; D012959:Socioeconomic Factors; D055815:Young Adult
chemical_list: D007252:Influenza Vaccines
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