Table 2.

Prevalence of knee and hip OA, by census industrial group of longest job ever held.

	N (%) with Radiographic Knee OA*	N (%) with Symptomatic Knee OA*	N (%) with Radiographic Hip OA	N (%) with Symptomatic Hip OA
Managerial and professional specialty	155 (28.7)	85 (16.0)	170 (33.2)	51 (10.0)
Technical, sales, and administrative support	188 (28.9)	121 (18.9)	190 (31.6)	60 (10.0)
Service	164 (41.3)	118 (30.1)	118 (33.0)	43 (12.0)
Farming, forestry, and fishing	18 (47.4)	8 (22.9)	17 (44.7)	3 (8.3)
Precision production, craft, and repair	118 (37.2)	78 (24.8)	99 (32.1)	38 (12.3)
Operators, fabricators, and laborers	209 (37.1)	133 (24.0)	177 (32.7)	70 (13.1)

^*Overall chi-square test significant (p < 0.001). OA: osteoarthritis.