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Table 3 The association between SHS exposure and stress by smoking status

From: Is secondhand smoke associated with stress in smokers and non-smokers?

  Unadjusted Adjusted
  Smoker Ex-smoker Never smoker Smoker Ex-smoker Never smoker
Variable OR 95 % CI OR 95 % CI OR 95 % CI OR 95 % CI OR 95 % CI OR 95 % CI
Secondhand smoke exposure state
 Exposurea 1.31 1.16 1.47 1.42 1.23 1.63 1.44 1.33 1.57 1.22 1.08 1.39 1.25 1.07 1.46 1.42 1.30 1.56
 Non-exposure 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - -
Sex
 Male 0.49 0.42 0.00 0.44 0.37 0.52 0.64 0.57 0.73 0.51 0.43 0.61 0.50 0.41 0.61 0.59 0.52 0.67
 Female 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - -
Marital status
 Married 0.90 0.78 1.03 0.70 0.57 0.86 0.82 0.74 0.91 1.22 1.01 1.46 0.99 0.74 1.32 1.08 0.91 1.29
 Single 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - -
Age
 19–29 1.88 1.44 2.45 2.50 1.92 3.26 1.29 1.12 1.49 2.69 1.86 3.89 2.54 1.67 3.84 1.98 1.57 2.52
 30–39 2.01 1.57 2.57 2.56 2.06 3.18 1.13 0.98 1.29 2.61 1.87 3.63 2.68 1.98 3.62 1.51 1.25 1.83
 40–49 1.60 1.26 2.05 1.93 1.56 2.39 0.96 0.84 1.09 2.03 1.48 2.78 2.30 1.72 3.08 1.25 1.04 1.50
 50–59 1.19 0.91 1.54 1.39 1.11 1.75 0.90 0.79 1.03 1.45 1.08 1.95 1.66 1.27 2.17 1.08 0.92 1.25
 60–69 0.81 0.61 1.08 0.92 0.72 1.16 0.93 0.81 1.07 0.96 0.70 1.30 1.06 0.82 1.36 1.02 0.88 1.18
 70≥ 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - -
Income
 Bottom 0.90 0.76 1.07 1.41 1.14 1.74 1.26 1.13 1.41 0.87 0.72 1.04 1.30 1.03 1.63 1.22 1.08 1.38
 Middle-bottom 0.86 0.72 1.02 1.22 1.00 1.49 1.13 1.01 1.26 0.84 0.70 1.01 1.18 0.96 1.46 1.10 0.98 1.24
 Middle-top 0.85 0.72 1.00 0.91 0.74 1.11 1.05 0.94 1.18 0.84 0.70 1.00 0.87 0.70 1.08 1.05 0.93 1.18
 Top 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - -
Economic status
 Working 1.01 0.88 1.17 1.10 0.95 1.28 1.21 1.12 1.30 1.01 0.85 1.21 1.20 0.99 1.45 1.23 1.12 1.34
 Not working 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - -
Educational level
 Elementary school 0.61 0.51 0.73 0.72 0.60 0.86 0.93 0.85 1.02 0.77 0.60 0.98 1.03 0.80 1.34 0.89 0.76 1.03
 Middle school 0.72 0.58 0.89 0.63 0.49 0.81 0.66 0.58 0.76 0.82 0.64 1.04 0.83 0.63 1.11 0.67 0.57 0.79
 High school 0.81 0.71 0.92 0.88 0.75 1.03 0.80 0.73 0.88 0.78 0.68 0.90 0.84 0.71 1.01 0.76 0.68 0.84
 University & college 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - -
Perceived health status
 Good 0.45 0.39 0.52 0.54 0.46 0.64 0.37 0.34 0.41 0.39 0.34 0.46 0.45 0.38 0.55 0.33 0.30 0.36
 Bad 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - -
Year
 2007 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - - 1.00 - -
 2008 1.18 0.92 1.51 1.41 1.06 1.87 0.93 0.79 1.09 1.14 0.89 1.46 1.39 1.02 1.88 0.87 0.73 1.02
 2009 1.18 0.92 1.50 1.39 1.06 1.83 1.15 0.99 1.33 1.20 0.94 1.53 1.38 1.04 1.83 1.12 0.96 1.31
 2010 1.07 0.82 1.40 1.27 0.95 1.70 0.95 0.81 1.12 1.10 0.84 1.45 1.25 0.92 1.71 0.92 0.77 1.09
 2011 1.16 0.89 1.51 1.01 0.75 1.36 0.98 0.84 1.15 1.22 0.93 1.60 1.06 0.77 1.46 1.00 0.84 1.18
 2012 1.02 0.79 1.34 1.19 0.88 1.59 0.90 0.77 1.05 1.02 0.78 1.34 1.26 0.92 1.73 0.92 0.78 1.09
  1. aExposure included participants who were exposed to SHS in the workplace or at home