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Table 2 Relationships between work factors and NPS (exposure at baseline and outcome at follow-up), work factors and difficulties initiating sleep (exposure at baseline and mediator at follow-up), and difficulties initiating sleep and NPS (mediator at baseline and outcome at follow-up) (N = 6277)

From: Effects of psychosocial work factors on number of pain sites: The role of sleep quality as mediator

Psychosocial work factorWork factor → Sleep qualityWork factor → Pain sitesSleep quality → Pain sitesIndirect effect
Quantitative job demands0.041[0.002,0.084]
SE = 0.022
0.031*[0.066,0.120]
SE = 0.023
0.092*[0.066,0.120]
SE = 0.014
0.004[0.000,0.008]
SE = 0.002
Decision demands0.040[-0.002,0.084]
SE = 0.022
0.011[-0.056,0.031]
SE = 0.022
0.094*[0.067,0.120]
SE = 0.014
0.004[-0.000,0.009]
SE = 0.002
Positive challenges at work-0.073*[-0.132,-0.015]
SE = 0.029
0.043[-0.103,0.015]
SE = 0.030
0.091*[0.065,0.119]
SE = 0.014
-0.007*[-0.014,-0.002]
SE = 0.003
Role clarity0.037[-0.081,0.006]
SE = 0.022
-0.053*[-0.096,-0.010]
SE = 0.022
0.090*[0.064,0.118]
SE = 0.014
0.003[-0.008,0.000]
SE = 0.002
Role conflict0.128*[0.076,0.180]
SE = 0.027
0.117*[0.062,0.171]
SE = 0.027
0.084*[0.058,0.113]
SE = 0.014
0.011*[0.006,0.018]
SE = 0.003
Decision control-0.101*[-0.158,-0.034]
SE = 0.032
-0.078*[-0.147,-0.010]
SE = 0.035
0.090*[0.065,0.117]
SE = 0.014
-0.009*[-0.016,-0.004]
SE = 0.003
Control over work pacing-0.049[-0.096,0.004]
SE = 0.026
-0.005[-0.057,0.048]
SE = 0.027
0.093*[0.067,0.116]
SE = 0.014
-0.005[-0.010,-0.000]
SE = 0.003
Predictability during the next month-0.044[-0.104,0.007]
SE = 0.029
-0.102*[-0.163,-0.047]
SE = 0.030
0.090*[0.064,0.117]
SE = 0.014
-0.004[-0.010,0.000]
SE = 0.003
Support from superior-0.052*[-0.084,-0.019]
SE = 0.016
-0.058*[-0.090,-0.023]
SE = 0.016
0.086*[0.059,0.114]
SE = 0.014
-0.004*[-0.008,-0.002]
SE = 0.002
Coworker support-0.053*[-0.104,-0.011]
SE = 0.024
-0.059*[-0.107,-0.001]
SE = 0.027
0.090*[0.063,0.117]
SE = 0.014
-0.005*[-0.011,-0.001]
SE = 0.002
Empowering leadership-0.033*[-0.063,-0.005]
SE = 0.015
-0.030*[-0.060,-0.002]
SE = 0.015
0.090*[0.065,0.118]
SE = 0.014
-0.003*[-0.007,-0.001]
SE = 0.001
Fair leadership0.027[-0.062,0.006]
SE = 0.017
-0.060*[-0.099,-0.026]
SE = 0.018
0.088*[0.062,0.116]
SE = 0.014
-0.002[-0.006,0.000]
SE = 0.002
Social climate-0.049*[-0.095,-0.004]
SE = 0.023
-0.083*[-0.132,-0.038]
SE = 0.024
0.086*[0.059,0.114]
SE = 0.014
-0.004*[-0.009,-0.001]
SE = 0.002
  1. All regressions were adjusted for age, sex, skill level, and baseline levels of outcome. Values reflect Beta-estimates and confidence intervals reported are bias corrected (BCa CI)
  2. * Significant at P < 0.05