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Table 3 The Association between visual impairment and sleep duration in the National Health Interview Survey, 2009

From: Association between visual impairment and sleep duration: analysis of the 2009 National Health Interview Survey (NHIS)

  Visual impairment
Short sleep,* < 6 hours OR 95% C.I
Model A 1.8 1.6-2.0
Model B 1.8 1.6-2.1
Model C 1.6 1.5-1.9
Long sleep,* > 8 hours   
Model A 2.3 2.0-2.8
Model B 1.8 1.5-2.1
Model C 1.6 1.3-1.9
  1. *6-8 hours of sleep was the reference group.
  2. Model A: Unadjusted.
  3. Model B: Adjusted for age, sex, income, race-ethnicity.
  4. Model C: Adjusted for Model B and BMI, hypertension, diabetes, heart disease, depression.