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. Author manuscript; available in PMC: 2011 May 1.
Published in final edited form as: Sleep Med. 2010 May;11(5):470–478. doi: 10.1016/j.sleep.2009.10.006

Table 2.

Unadjusted Odds Ratios (OR) and 95% Confidence Intervals (CI) for reports of SC in Women and Men for Ethnicity, Education, Marital Status, Employment Status, and Income

N=159856 Female Male
OR 95% CI p-value OR 95% CI p-value
Ethnicity (Reference Group = White)
Black or African American 1.00 0.85 1.16 0.95 0.95 0.86 1.06 0.37
Asian or Other 0.92 0.72 1.18 0.53 0.73 0.61 0.87 0.001
Multiracial 1.71 1.24 2.37 0.001 1.94 1.56 2.42 <.0001
Hispanic or Latino 0.78 0.65 0.94 0.008 0.87 0.77 0.98 0.03
Education (Reference Group = College Graduate)
Less than High School 1.78 1.50 2.10 <.0001 2.13 1.87 2.41 <.0001
High School Graduate 1.69 1.49 1.93 <.0001 1.73 1.58 1.90 <.0001
Some College 1.53 1.34 1.74 <.0001 1.60 1.46 1.75 <.0001
Marital Status (Reference Group = Married)
Divorced 2.24 1.97 2.55 <.0001 1.61 1.48 1.75 <.0001
Widowed 1.86 1.57 2.21 <.0001 1.26 1.14 1.39 <.0001
Never Married 3.07 2.09 4.50 <.0001 2.14 1.77 2.60 <.0001
Separated 1.86 1.61 2.14 <.0001 1.30 1.16 1.46 <.0001
Part of Unmarried Couple 1.72 1.32 2.24 <.0001 1.60 1.30 1.96 <.0001
Employment Status (Reference Group = Employed)
Self-Employed 1.21 1.04 1.41 0.01 1.18 1.03 1.35 0.02
Unemployed >1 Year 3.86 2.69 5.54 <.0001 2.73 2.18 3.41 <.0001
Unemployed <1 Year 3.66 2.76 4.86 <.0001 2.37 1.92 2.92 <.0001
Homemaker 2.82 1.30 6.11 0.01 1.19 1.06 1.34 0.003
Student 1.76 1.27 2.46 0.001 1.31 1.04 1.67 0.03
Retired 1.28 1.14 1.44 <.0001 1.06 0.97 1.15 0.19
Unable to Work 7.37 6.31 8.61 <.0001 5.53 4.93 6.20 <.0001
Income (Reference Group = $75,000+)
< $10,000 3.56 2.82 4.50 <.0001 2.56 2.21 2.96 <.0001
$10,000 - $15,000 2.57 2.05 3.23 <.0001 2.58 2.24 2.96 <.0001
$15,000 - $20,000 2.08 1.72 2.50 <.0001 2.33 2.03 2.69 <.0001
$20,000 - $25,000 1.85 1.56 2.20 <.0001 1.95 1.71 2.21 <.0001
$25,000 - $35,000 1.71 1.42 2.05 <.0001 1.64 1.45 1.85 <.0001
$35,000 - $50,000 1.38 1.17 1.63 0.0001 1.48 1.31 1.66 <.0001
$50,000 - $75,000 1.12 0.95 1.33 0.18 1.25 1.11 1.40 0.0002