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. 2013 Dec 3;8(12):e81020. doi: 10.1371/journal.pone.0081020

Table 4. Measures of work stress and cortisol secretion measures in all participants at Whitehall II Phase 7, adjusted for age, gender, ethnicity, time of waking and time since waking.

CAR Slope
N Coef. CI P N Coef. CI P
JDC model
Job strain 1988 0.05 (−0.36,0.82) 0.82 1926 0.0003 (−0.0005,0.0012) 0.36
control 1988 −0.10 (−0.61,0.42) 0.71 1926 0.0002 (−0.0009,0.0012) 0.71
demand 2003 −0.01 (−0.53,0.52) 0.98 1940 0.0008 (−0.0003,0.0019) 0.14
Support 1922 0.14 (−0.37,0.64) 0.61 1863 −0.0004 (−0.0014,0.0007) 0.49
ERI model
ERI ratio 1986 −0.33 (−1.56,0.90) 0.61 1922 0.0023 (−0.0002,0.0049) 0.05
effort 1988 0.11 (−0.41,0.63) 0.67 1934 0.0007 (−0.0003,0.0018) 0.18
reward 1990 0.26 (−0.26,0.78) 0.33 1927 −0.0011 (−0.002,0.00001) 0.04

CAR, cortisol awakening response; Slope, cortisol decline over the day

Data were presented by 1-Standard Deviation increase of each dimension of JDC/ERI models. Job strain was calculated by subtracting control score from demand score; ERI ratio was calculated by the formula effort/reward*0.5 and logarithm transformed.