Table 2

Effect of per cent sitting time at work on trajectories of neck–shoulder pain intensity (scale 0–10) in the Danish PHysical ACTivity cohort with Objective measurements (DPHACTO) study population

95% CI
EstimateSEp ValueLowerUpper
Model 1 (n=625)
 Interaction (sitting×time)−0.0010.0000.020−0.0010.000
Model 2 (n=610)
 Interaction (sitting×time)−0.0010.0000.020−0.0010.000
Model 3 (n=595)
 Interaction (sitting×time)−0.0010.0000.027−0.0010.000
  • Model 1: unadjusted.

  • Model 2: adjusted for gender, age and body mass index.

  • Model 3: adjusted for the covariates in model 2 and occupational sector, lifting/carrying time at work, sitting time at leisure, physical activity at work and leisure, upper arm elevation >60° at work.

  • ‘Time’ indicates the 14 pain ratings over 12 months, starting at baseline; ‘sitting’ represents sitting time in percentage of working hours; ‘interaction’ indicates the effect of sitting on the rate of change in pain intensity over time.