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Table 3 Odds ratios for high 10-year risk of CHD and stroke

From: The effect of long working hours on 10-year risk of coronary heart disease and stroke in the Korean population: the Korea National Health and Nutrition Examination Survey (KNHANES), 2007 to 2013

Weekly working hours    Estimated 10-year CHD risk ≥90th percentile of estimated risk of CHD Estimated 10-year stroke risk ≥90th percentile of estimated risk of stroke
n % mean SD n % aORa 95% CI mean SD n % aORa 95% CI
Men
  < 30 460 6.1 1.59 14.7 89 19.4 1.75 1.28 2.40 1.59 14.7 97 21.1 1.77 1.29 2.42
 30–40 649 8.6 1.25 19.3 72 11.1 1.04 0.76 1.42 1.25 19.3 86 13.3 1.24 0.91 1.68
 40 1406 18.6 1.05 5.4 122 8.7 1.00 Reference 1.05 5.4 115 8.18 8.2 Reference
 40–50 1567 20.7 1.03 13.2 137 8.7 0.89 0.69 1.16 1.03 13.2 130 8.3 0.85 0.65 1.11
 50–60 1587 21.0 1.01 36.0 137 8.6 0.87 0.67 1.12 1.01 36 127 8.0 0.79 0.60 1.03
 60–70 1009 13.3 1.06 46.0 88 8.7 0.83 0.62 1.11 1.06 46 93 9.2 0.87 0.65 1.17
 70–80 555 7.3 1.13 14.4 52 9.4 0.83 0.59 1.19 1.13 14.4 63 11.4 0.99 0.70 1.39
 .39 332 4.4 1.37 4.9 59 17.8 1.76 1.23 2.52 1.37 4.86 45 13.6 1.23 0.83 1.82
 Total 7565 100.0 1.11 21.8 756 10.0     1.97 15 756 10.0    
p trend        0.43      0.94
Women
  < 30 1357 21.8 0.26 18.2 136 10.0 1.11 0.81 1.54 1.45 10.2 141 10.4 1.41 1.00 1.99
 30–40 974 15.6 0.26 122.0 95 9.8 1.08 0.77 1.53 1.42 6.2 96 9.9 1.34 0.94 1.93
 40 981 15.7 0.19 16.8 65 6.6 1.00 Reference 1.14 26.5 53 5.40 5.4 Reference
 40–50 1085 17.4 0.23 106.0 88 8.1 1.01 0.71 1.43 1.33 28.8 84 7.7 1.18 0.82 1.71
 50–60 757 12.1 0.28 24.6 81 10.7 1.06 0.74 1.51 1.59 10 91 12.0 1.49 1.03 2.16
 60–70 488 7.8 0.29 14.5 61 12.5 1.09 0.74 1.61 1.65 10.1 60 12.3 1.31 0.87 1.98
 70–80 367 5.9 0.33 8.5 58 15.8 1.32 0.88 1.97 1.81 2.4 54 14.7 1.47 0.96 2.25
 .25 225 3.6 0.4 37.3 39 17.3 1.63 1.03 2.58 2.06 7.5 44 19.6 2.32 1.46 3.69
 Total 6234 100.0 0.26 0.3 623 10.0     1.45 1.4 623 10.0    
p trend        0.06      0.01
  1. CHD coronary heart disease
  2. aadjusted for household income, employment condition, occupation, work shift, and weekly working hour; values displaying significant differences are given in bold (p-value ≤ 0.05)
  3. *p for trend was tested after excluding participants with <40 weekly working hours