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Table 3 Relationships between work factors and NPS (exposure at baseline and outcome at follow-up), work factors and disturbed sleep (exposure at baseline and mediator at follow-up), and disturbed 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 factor

Work factor → Sleep quality

Work factor → Pain sites

Sleep quality → Pain sites

Indirect effects

Quantitative job demands

0.044[-0.011,0.092]

SE = 0.026

0.033[-0.009,0.075]

SE = 0.022

0.072*[0.044,0.095]

SE = 0.014

0.003[0.000,0.007]

SE = 0.002

Decision demands

0.020[-0.031,0.074]

SE = 0.026

-0.014[-0.062,0.023]

SE = 0.022

0.070*[0.045,0.096]

SE = 0.013

0.001[-0.002,0.006]

SE = 0.002

Positive challenges at work

-0.112*[-0.177,-0.048]

SE = 0.033

-0.050[-0.113,0.009]

SE = 0.030

0.068*[0.043,0.093]

SE = 0.013

-0.008*[-0.014,-0.003]

SE = 0.003

Role clarity

-0.048[-0.103,0.000]

SE = 0.026

-0.051*[-0.096,-0.007]

SE = 0.023

0.066*[0.041,0.093]

SE = 0.013

-0.003[-0.008,0.000]

SE = 0.002

Role conflict

0.121*[0.064,0.188]

SE = 0.032

0.126*[0.069,0.181]

SE = 0.028

0.061*[0.037,0.088]

SE = 0.013

0.007*[0.003,0.013]

SE = 0.002

Decision control

-0.102*[-0.180,-0.030]

SE = 0.037

-0.085*[-0.148,-0.021]

SE = 0.034

0.067*[0.043,0.092]

SE = 0.013

-0.007*[-0.014,-0.002]

SE = 0.003

Control over work pacing

0.029[-0.038,0.090]

SE = 0.031

-0.007[-0.061,0.043]

SE = 0.026

0.069*[0.045,0.095]

SE = 0.013

0.002[-0.002,0.007]

SE = 0.002

Predictability during the next month

-0.022[-0.086,0.043]

SE = 0.032

-0.105*[-0.167,-0.048]

SE = 0.030

0.067*[0.042,0.093]

SE = 0.013

-0.001[-0.006,0.003]

SE = 0.002

Support from superior

-0.080*[-0.123,-0.045]

SE = 0.019

-0.061*[-0.095,-0.030]

SE = 0.017

0.063*[0.039,0.089]

SE = 0.013

-0.005*[-0.009,-0.003]

SE = 0.002

Coworker support

-0.070*[−0.125,-0.025]

SE = 0.026

-0.052[-0.107,0.002]

SE = 0.028

0.067*[0.042,0.093]

SE = 0.014

-0.005*[-0.010,-0.002]

SE = 0.002

Empowering leadership

-0.053*[-0.089,0.020]

SE = 0.018

-0.032*[-0.061,-0.005]

SE = 0.015

0.067*[0.041,0.092]

SE = 0.013

-0.004*[-0.007,-0.001]

SE = 0.001

Fair leadership

-0.040[-0.082,0.000]

SE = 0.027

-0.062*[-0.100,-0.028]

SE = 0.021

0.065*[0.040,0.091]

SE = 0.013

-0.004[-0.007,0.000]

SE = 0.003

Social climate

-0.061*[-0.117,-0.013]

SE = 0.027

-0.091*[-0.136,-0.050]

SE = 0.022

0.063*[0.039,0.089]

SE = 0.013

-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