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Table 3 Odds ratios for different work classes for having a joint replacement

From: Association between occupation and knee and hip replacement due to osteoarthritis: a case-control study

  Men Women
  TKR THR TKR THR
Technicians and clerks 2.0 (0.71 to 5.7) 1.6 (0.85 to 3.0) 0.93 (0.44 to 2.0) 0.74 (0.44 to 1.3)
Service and shop workers 1.5 (0.41 to 5.2) 2.1 (1.0 to 4.2) 1.3 (0.63 to 2.6) 0.79 (0.48 to 1.3)
Farmers 5.1 (2.1 to 12.4) 3.6 (2.1 to 6.2) 1.4 (0.67 to 2.7) 0.62 (0.36 to 1.0)
Fishermen 3.3 (1.3 to 8.4) 1.3 (0.69 to 2.5) None in group
Craft workers 2.5 (1.0 to 6.2) 1.5 (0.87 to 2.7) 1.2 (0.59 to 2.5) 0.66 (0.39 to 1.1)
Operators and unskilled labour 1.4 (0.5 to 3.8) 1.4 (0.78 to 2.6) 1.4 (0.66 to 2.9) 0.60 (0.34 to 1.1)
Housewives None in group 1.2 (0.58 to 2.4) 0.67 (0.40 to 1.1)
  1. Numbers are odds ratio (95% confidence interval).
  2. Managers and professionals are used as a reference group. THR: total hip replacement; TKR: total knee replacement