title: Factors Associated with Cataract in Korea: A Community Health Survey 2008-2012.
abstract: OBJECTIVE
  To investigate sociodemographic factors, health behaviors, and comorbidities associated with cataracts in a large, nationally representative Korean sample.
  
  
  METHODS
  This cross-sectional study included 715554 adults aged 40 years or older who participated in the 2008-2012 Community Health Survey. Significant risk factors were identified using multivariate logistic regression analysis for self-reported cataract, and a nomogram for analysis of cataract risk was generated.
  
  
  RESULTS
  Roughly 11% of participants (n=88464) reported being diagnosed with cataracts by a doctor. Age was the most important independent risk factor [adjusted odds ratio (aOR)=1.11, 99% confidence interval (CI), 1.11-1.11 for each increasing year]. Significant comorbidities with descending order of effect size (aOR, 99% CI), included diabetes mellitus (1.78, 1.71-1.85), osteoporosis (1.62, 1.56-1.69), arthritis (1.54, 1.48-1.59), hepatitis B infection (1.46, 1.31-1.63), atopic dermatitis (1.50, 1.33-1.69), angina (1.46, 1.35-1.57), allergic rhinitis (1.45, 1.36-1.55), dyslipidemia (1.38, 1.31-1.45), asthma (1.35, 1.26-1.44), and hypertension (1.23, 1.19-1.28). Subjects who sleep less than 6 hours/day were more likely to have cataract than subjects who sleep more than 9 hours/day as a reference group (aOR=1.22, 99% CI, 1.11-1.34).
  
  
  CONCLUSIONS
  While the most important cataract risk factor was age, the ten comorbidities mentioned above were also significant risk factors. Interestingly, longer duration of sleep was associated with a protective effect against cataract development.
authors.affiliation: Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Tyler Hyungtaek
authors.initials: TH
authors.lastname: Rim
authors.affiliation: Department of Policy Research Affairs, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea.
authors.forename: Dong Wook
authors.initials: DW
authors.lastname: Kim
authors.affiliation: Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Sung Eun
authors.initials: SE
authors.lastname: Kim
authors.affiliation: Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.|Yonsei Healthcare Big Data Based Knowledge Integration System Research Center, Institute of Convergence Science, Yonsei University College of Medicine, Seoul, Korea. semekim@yuhs.ac.
authors.forename: Sung Soo
authors.initials: SS
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001249:Asthma / Q000453:epidemiology; D002386:Cataract / Q000453:epidemiology*; D015897:Comorbidity; D003430:Cross-Sectional Studies; D003876:Dermatitis, Atopic / Q000453:epidemiology; D003920:Diabetes Mellitus / Q000453:epidemiology; D005260:Female; D015438:Health Behavior; D006306:Health Surveys; D006801:Humans; D006973:Hypertension / Q000453:epidemiology; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D049451:Nomograms; D016017:Odds Ratio; D011159:Population Surveillance / Q000379:methods*; D015995:Prevalence; D056910:Republic of Korea / Q000453:epidemiology; D012111:Residence Characteristics; D012307:Risk Factors; D057566:Self Report; D012890:Sleep; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires
keywords: Cataract; a community health survey; nomogram; risk factor