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. Author manuscript; available in PMC: 2014 Jul 7.
Published in final edited form as: Occup Environ Med. 2012 Jul 5;69(10):713–720. doi: 10.1136/oemed-2012-100665

Table 2.

Adjusted mean values of subclinical CVD measures by hours of work per week, stratified by gender.

Subclinical CVD Hours of work per week p-value
≤20 21-39 40 41-50 >50
Common CIMT (n=288) (n=434) (n=510) (n=250) (n=168)
Women Model 1 0.792 ± 0.009 0.803 ± 0.007 0.800 ± 0.007 0.802 ± 0.009 0.836 ± 0.011 0.002
Model 2 0.791 ± 0.009 0.802 ± 0.007 0.801 ± 0.007 0.806 ± 0.009 0.831 ± 0.012 0.008
Model 3 0.795 ± 0.009 0.805 ± 0.007 0.800 ± 0.006 0.804 ± 0.009 0.823 ± 0.012 0.073
(n=259) (n=338) (n=521) (n=372) (n=323)
Men Model 1 0.845 ± 0.011 0.853 ± 0.009 0.848 ± 0.007 0.862 ± 0.009 0.853 ± 0.009 0.395
Model 2 0.844 ± 0.011 0.855 ± 0.009 0.848 ± 0.007 0.862 ± 0.009 0.852 ± 0.009 0.414
Model 3 0.849 ± 0.011 0.857 ± 0.009 0.852 ± 0.007 0.858 ± 0.008 0.850 ± 0.009 0.867
Internal CIMT
Women Model 1 0.932 ± 0.028 0.886 ± 0.021 0.879 ± 0.020 0.913 ± 0.028 0.961 ± 0.034 0.320
Model 2 0.929 ± 0.028 0.884 ± 0.021 0.881 ± 0.020 0.920 ± 0.028 0.956 ± 0.034 0.361
Model 3 0.932 ± 0.028 0.886 ± 0.021 0.871 ± 0.020 0.919 ± 0.028 0.952 ± 0.035 0.641
Men Model 1 1.090 ± 0.034 1.043 ± 0.028 1.007 ± 0.022 1.011 ± 0.026 1.047 ± 0.028 0.660
Model 2 1.090 ± 0.034 1.048 ± 0.028 0.998 ± 0.022 1.016 ± 0.026 1.051 ± 0.028 0.745
Model 3 1.115 ± 0.034 1.049 ± 0.028 1.004 ± 0.022 1.011 ± 0.026 1.029 ± 0.029 0.140
Ankle-Brachial Index
Women Model 1 1.102 ± 0.006 1.104 ± 0.005 1.111 ± 0.004 1.108 ± 0.006 1.091 ± 0.007 0.954
Model 2 1.103 ± 0.006 1.104 ± 0.005 1.112 ± 0.004 1.104 ± 0.006 1.092 ± 0.007 0.926
Model 3 1.104 ± 0.006 1.103 ± 0.004 1.114 ± 0.004 1.102 ± 0.006 1.090 ±0.007 0.804
Men Model 1 1.161 ± 0.007 1.156 ± 0.006 1.154 ± 0.005 1.150 ± 0.006 1.149 ± 0.006 0.122
Model 2 1.162 ± 0.007 1.155 ± 0.006 1.155 ± 0.005 1.149 ± 0.006 1.149 ± 0.006 0.106
Model 3 1.165 ± 0.007 1.158 ± 0.006 1.154 ± 0.005 1.149 ± 0.005 1.148 ±0.006 0.046

Results are mean ± SE. P-values test for trends and are obtained from multivariable linear regression. Model 1: Adjusted for age Model 2: Adjusted for age, race/ethnicity, education Model 3: Adjusted for ‘Model 2’ plus smoking status, pack-years of smoking, alcohol status, physical activity, HDL cholesterol, LDL cholesterol, triglycerides, diabetes, hypertension, systolic blood pressure, BMI and income. Effect modification by gender for common CIMT (p = 0.340), internal CIMT (p = 0.154), and ABI (p = 0.413).