Table 5.

HR and 95% CI of full disability retirement as a result of hip OA 2005–2013 among 30- to 60-year-old women by occupational group.

Occupational GroupsModel 1Model 2Model 3All Factors, PRE*bHeavy Physical Work, PRE*cKneeling or Squatting, PREHeavy Lifting, PRESitting, PREStanding or Moving, PRE
HR95% CIHR95% CIPRE*aHR95% CI
Managers2.351.14–4.842.181.06–4.4812.62.291.11–4.71−9.3d0.00.00.0−12.7d0.0
Professionals1.001.001.00
Teaching professionals1.820.98–3.371.961.06–3.63NA1.650.87–3.1432.3−4.2d8.90.036.50.0
Physical and engineering science technicians2.380.99–5.731.480.61–3.60NA1.450.60–3.52NA4.22.1−2.1d16.70.0
Environmental officers and nurses4.102.37–7.113.652.10–6.3314.52.991.68–5.3224.916.69.8−0.8d20.00.4
Finance and sales associate professionals, and administrative secretaries2.861.68–4.881.851.08–3.1954.31.801.05–3.115.93.53.5−1.2d0.0−1.2d
Office clerks3.011.76–5.151.821.05–3.1459.21.911.10–3.31−11.023.7−2.4d0.0−17.1d0.0
Customer service clerks2.771.43–5.371.600.82–3.1466.11.950.98–3.88NANANANANANA
Service workers9.095.58–14.84.712.82–7.8554.13.091.76–5.4343.721.321.0−0.5d22.10.8
Shop workers7.304.26–12.53.692.11–6.4457.32.931.61–5.3128.316.411.2−0.4d19.01.1
Agricultural and fishery workers12.44.26–12.56.483.76–11.251.93.892.04–7.4247.336.925.4−1.8d24.60.0
Construction workers, electricians, and plumbers2.800.65–12.11.430.33–6.30NA0.680.14–3.29NANANANANANA
Metal and machinery workers4.021.35–11.92.030.68–6.1065.91.290.41–4.09NANANANANANA
Craft workers6.893.48–13.63.561.77–7.1656.52.991.49–5.9922.313.77.8−0.4d12.10.0
Chemical, wood, and metal processing workers12.76.52–24.66.183.12–12.355.74.902.42–9.9324.722.83.9−0.6d11.80.4
Machine operators and assemblers8.975.20–15.54.372.48–7.7257.73.521.94–6.4125.224.02.1−0.6d7.40.3
Professional drivers15.27.47–30.87.653.72–15.853.27.143.37–15.17.722.15.6−1.4d0.50.0
Building caretakers, cleaners, assistant nurses, and kitchen workers11.06.71–18.15.433.22–9.1655.73.291.84–5.9148.325.720.1−0.7d24.80.5
Unskilled transport, construction, and manufacturing workers8.514.42–16.44.122.10–8.1058.52.781.33–5.7842.937.813.8−1.3d18.91.0
  • Model 1: adjusted for age. Model 2: adjusted for age and education. Model 3: adjusted for age, education, and all physical workload factors.

  • * Reference group: professionals.

  • a PRE = percentage of attenuation of HR after adjustment: (HRModel 2−HRModel 1)/(HRModel 1−1) × 100%.

  • b PRE = percentage of attenuation of HR after adjustment: (HRModel 3−HRModel 2)/(HRModel 2−1) × 100%.

  • c PRE = percentage of attenuation of HR after adjustment: (HRModel X−HRModel 2)/(HRModel 2−1) × 100%, where Model X is adjusted for age, education, and the physical workload factor in question; HR for the Model X not shown.

  • d Negative sign indicates an increase in HR after adjustment. OA: osteoarthritis; PRE: proportion explained (%); NA: not applicable.