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Table 4 The association between visual impairment and sleep duration stratified by race-ethnic groups

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

Visual impairment White Black
OR (95% C.I.) < 6 hours > 8 hours < 6 hours > 8 hours
Model A 1.9 (1.6-2.2) 2.4 (2.0-2.8) 2.2 (1.6-3.2) 2.2 (1.4-3.4)
Model B 1.8 (1.6-2.1) 1.8 (1.5-2.1) 2.2 (1.5-3.1) 1.8 (1.1-2.1)
Model C 1.6 (1.4-1.9) 1.6 (1.3-1.9) 1.9 (1.3-2.8) 1.6 (1.0-2.5)
  1. 6-8 hours was the reference group.
  2. Model A: Unadjusted.
  3. Model B: Adjusted for age, sex, income.
  4. Model C: Adjusted for Model B and BMI, hypertension, diabetes, heart disease, depression.