Table 1

Characteristics of 13 332 922 person-years (PY) of follow-up (2003–2008) according to categories of lifting/carrying intensities

Lifting/carrying intensity (≥10 kg (times/day)) (%)
=0>0.0–<10≥10–<50≥50Total
PY=6 700 690PY=3 288 900PY=2 816 420PY=5
26 912
PY=13 322 922
Sex
 Male48.340.664.784.651.3
 Female51.759.435.315.448.7
Age
 <3511.817.318.218.614.8
 ≥35–4525.931.732.835.129.1
 ≥45–5523.030.328.727.626.2
 ≥55–6527.719.519.518.223.6
 ≥65–7011.61.20.80.56.3
Socioeconomic status
 Self-employed1.92.13.11.12.2
 Top managers and upper level employees27.88.40.70.516.1
 Intermediate employees48.079.771.569.461.7
 Basic employees7.98.523.227.912.1
 Employees outside the labour-market14.41.31.51.17.9
Pushing/pulling≥50 kg (times/day)
 =0100.015.112.18.856.9
 >0.0–0.50.038.113.917.713.0
 ≥0.5–2.50.045.054.512.423.1
 ≥2.50.01.819.561.17.0
  • Occupational mechanical exposures were estimated using the Shoulder job exposure matrix.