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Table 5 Factors associated with risk of cataract development - Final model (n = 11,591)

From: Cataract subtype risk factors identified from the Korea National Health and Nutrition Examination survey 2008–2010

  Univariate OR Multivariate OR 95% CI p
1. Socio-demographic factors
Age (years)     
  40–49 1.0 (ref) 1.0 (ref)   
  50–59 4.3 3.5 3.0–4.1 <0.01
  60–69 21.0 14.3 12.1–16.8 <0.01
  70–80 92.6 53.1 42.5–66.4 <0.01
  80+ 344.5 194.1 94.5–398.6 <0.01
Sex     
  Men 1.0 (ref) 1.0 (ref)   
  Women 1.0 0.9 0.8–1.0 0.14
Monthly household income    
  Lowest quintile 1.0 (ref) 1.0 (ref)   
  2nd to 4th quintile 0.2 0.9 0.7–1.0 0.05
  Highest quintile 0.1 0.7 0.6–0.9 <0.01
Education     
  Elementary school 1.0 (ref) 1.0 (ref)   
  Middle school 0.3 0.8 0.7–0.9 <0.01
  High school 0.2 0.7 0.6–0.8 <0.01
  University or higher 0.1 0.6 0.5–0.7 <0.01
2. Health examination variable
Hypercholesterolemia     
  No 1.0 (ref) 1.0 (ref)   
  Yes 1.5 1.2 1.0–1.3 0.02
Anemia     
  No 1.0 (ref) 1.0 (ref)   
  Yes 1.3 1.1 0.9–1.3 0.18
Metabolic syndrome     
  No 1.0 (ref) 1.0 (ref)   
  Yes 2.1 1.1 0.9–1.2 0.32
3. Comorbidities
Hypertension     
  No 1.0 (ref) 1.0 (ref)   
  Yes 3.1 1.1 1.0–1.3 0.02
Diabetic mellitus     
  No 1.0 (ref) 1.0 (ref)   
  Yes 3.1 1.6 1.3–1.9 <0.01