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Table 1 Characteristics of cortisol-involved participants and non-participants at baseline

From: Impact of shift work on the diurnal cortisol rhythm: a one-year longitudinal study in junior physicians

Variables Cortisol-involved participants Cortisol-involved non-participants p
N = 70 N = 551
Age (years) (mean ± SD) 30.61 ± 2.63 30.51 ± 2.72 0.7777
Working hours per week (mean ± SD) 50.86 ± 9.46 51.18 ± 9.66 0.7903
Gender Men 30, 42.86% 273, 49.55% 0.2916
Women 40, 57.14% 278, 50.45%  
Partnership No 17, 24.29% 132, 23.96% 0.9515
Yes 53, 75.71% 419, 76.04%  
Children No 58, 82.86% 462, 83.85% 0.8325
Yes 12, 17.14% 89, 16.15%  
Professional tenure ≤ 2 years 34, 48.57% 239, 43.38% 0.4094
>  2 years 36, 51.43% 312, 56.62%  
Shift work No 51, 72.86% 375, 68.06% 0.4151
Yes 19, 27.14% 176, 31.94%  
Smoking No 59, 84.29% 448, 81.31% 0.5442
Yes 11, 15.71% 103, 18.69%  
Risky alcohol use No 63, 90.00% 486, 88.20% 0.6583
Yes 7, 10.00% 65, 11.80%  
Physical activity Inactive 18, 25.71% 157, 28.49% 0.6263
Active 52, 74.29% 394, 71.51%  
Overweight and obesity No 60, 85.71% 446, 80.94% 0.3331
Yes 10, 14.29% 105, 19.06%  
  1. Difference determined by Student’s t-test or Chi-square test