Skip to main content

Table 4 Direct, indirect and total effects of shift work on mental health and physical functioning, with unhealthy behavior as potential mediator (n = 1633)

From: The mediating role of unhealthy behavior in the relationship between shift work and perceived health

  Shift work – mental health Shift work – physical functioning
  B (95% CI) B (95% CI)
Overweight
 Total Effecta −0.12 (− 1.59–1.30) −0.86 (− 2.31–0.53)
 Direct Effectb (c’) −0.15 (− 1.65–1.29) −0.78 (− 2.22–0.76)
 Indirect Effectc (a*b) 0.03 (− 0.02–0.10) − 0.08 (− 0.19–0.00)
Smoking
 Total Effecta −0.11 (− 1.57–1.31) −0.87 (− 2.25–0.50)
 Direct Effectb (c’) −0.02 (− 1.50–1.45) −0.78 (− 2.27–0.70)
 Indirect Effectc (a*b) −0.09 (− 0.20 – − 0.01) −0.09 (− 0.21 – − 0.01)
Physical inactivity
 Total Effecta − 0.11 (−1.56–1.31) −0.89 (− 2.30–0.49)
 Direct Effectb (c’) −0.22 (− 1.70–1.26) − 0.97 (− 2.46–0.52)
 Indirect Effectc (a*b) 0.11 (0.03–0.23) 0.08 (0.01–0.18)
Overweight, smoking and physical inactivity
 Total Effecta −0.12 (− 1.59–1.30) −0.88 (− 2.29–0.53)
 Direct Effectb (c’) −0.17 (− 1.64–1.30) −0.75 (− 2.25–0.74)
 Indirect Effectc (a*b) 0.05 (− 0.10–0.22) − 0.13 (− 0.26–0.04)
  1. a Total effect of shift work on health, taking mediating effect into account
  2. b Direct effect of shift work on health, adjusted for the mediator, age, sex and level of education
  3. c Indirect effect of shift work on health through the mediator