HR and 95% CI of full disability retirement as a result of hip OA among 30- to 60-year-old men by occupational group, 2005–2013.
| Occupational Groups | Model 1 | Model 2 | Model 3 | All Factors, PRE*b | Heavy Physical Work, PRE*c | Kneeling or Squatting, PRE*b | Heavy Lifting, PRE*b | Sitting, PRE*b | Standing or Moving, PRE*b | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HR | 95% CI | HR | 95% CI | PRE*a | HR | 95% CI | |||||||
| Managers | 1.39 | 0.77–2.51 | 1.26 | 0.70–2.27 | NA | 1.17 | 0.65–2.10 | NA | NA | NA | NA | NA | NA |
| Professionals | 1.00 | 1.00 | 1.00 | NA | NA | NA | NA | NA | NA | ||||
| Teaching professionals | 0.69 | 0.28–1.67 | 0.69 | 0.28–1.68 | NA | 0.64 | 0.26– 1.58 | NA | NA | NA | NA | NA | NA |
| Physical and engineering science technicians | 3.05 | 1.91–4.87 | 2.17 | 1.34–3.51 | 42.9 | 1.88 | 1.14–3.12 | 24.8 | 12.0 | 16.2 | 10.3 | 25.6 | 50.4 |
| Environmental officers and nurses | 6.39 | 3.16–12.9 | 4.66 | 2.30–9.44 | 32.1 | 3.80 | 1.78–8.10 | 23.5 | 10.1 | 13.9 | 5.7 | 26.5 | 16.1 |
| Finance and sales associate professionals, and administrative secretaries | 2.84 | 1.77–4.56 | 1.85 | 1.15–2.98 | 53.8 | 1.65 | 1.01–2.69 | 23.5 | 12.9 | 11.8 | 5.9 | 15.3 | 15.3 |
| Office clerks | 4.02 | 2.33–6.92 | 2.32 | 1.32–4.10 | 56.3 | 1.91 | 1.07–3.45 | 31.1 | 30.3 | 10.6 | 7.6 | 18.9 | 12.1 |
| Customer service clerks | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |||
| Service workers | 8.41 | 5.24–13.5 | 4.72 | 2.89–7.73 | 49.8 | 3.07 | 1.73– 5.44 | 44.4 | 29.8 | 25.0 | 9.1 | 29.6 | 21.5 |
| Shop workers | 6.02 | 3.46–10.5 | 3.33 | 1.89–5.89 | 53.6 | 2.35 | 1.19– 4.67 | 42.1 | 26.2 | 25.3 | 20.2 | 39.5 | 31.3 |
| Agricultural and fishery workers | 9.23 | 6.06–14.1 | 4.99 | 3.21–7.77 | 51.5 | 1.92 | 0.95– 3.89 | 76.9 | 56.4 | 62.4 | 35.1 | 36.3 | 32.8 |
| Construction workers, electricians, and plumbers | 12.7 | 8.44–19.7 | 6.74 | 4.35–10.4 | 50.9 | 1.70 | 0.75–3.84 | 87.8 | 55.4 | 78.9 | 28.7 | 35.9 | 31.5 |
| Metal and machinery workers | 8.30 | 5.50–12.5 | 4.55 | 2.94–7.04 | 51.4 | 1.71 | 0.86–3.40 | 80.0 | 37.5 | 70.7 | 16.1 | 36.1 | 29.3 |
| Craft workers | 8.16 | 4.88–13.6 | 4.54 | 2.66–7.73 | 50.6 | 2.85 | 1.58–5.16 | 47.7 | 29.4 | 37.6 | 13.8 | 26.0 | 15.5 |
| Chemical, wood, and metal processing workers | 5.79 | 3.51–9.53 | 3.07 | 1.82–5.18 | 56.8 | 2.13 | 1.16–3.89 | 45.4 | 34.8 | 29.5 | 21.7 | 30.9 | 25.1 |
| Machine operators and assemblers | 6.59 | 4.13–10.5 | 3.50 | 2.14–5.71 | 55.3 | 2.34 | 1.32–4.15 | 46.4 | 32.8 | 31.6 | 20.8 | 30.0 | 24.8 |
| Professional drivers | 8.44 | 5.55–12.8 | 4.38 | 2.81–6.84 | 54.6 | 3.56 | 2.15–5.91 | 24.3 | 34.0 | 14.2 | 21.3 | 17.8 | 0.9 |
| Building caretakers, cleaners, assistant nurses, and kitchen workers | 9.15 | 5.75–14.6 | 4.90 | 3.00–7.99 | 52.2 | 2.58 | 1.39–4.80 | 59.5 | 35.9 | 42.3 | 11.3 | 34.4 | 23.1 |
| Unskilled transport, construction, and manufacturing workers | 10.6 | 6.75–16.7 | 5.58 | 3.46–9.01 | 52.3 | 2.94 | 1.58–5.47 | 57.6 | 44.3 | 41.0 | 25.8 | 31.7 | 25.5 |
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. OA: osteoarthritis; PRE: proportion explained (%); NA: not applicable.