Table 4

Clinical morbidity for musculoskeletal disorders by case and control groups

Morbidity (Read code)OA cases No (%)Non-OA controls No (%)OR* (99% CI)
Bold indicates statistically significant at 1% level.
*Adjusted for age, sex, and social class; non-OA group is the reference group.
Rheumatoid arthritis and inflammatory disorders (N04)140 (1.2)134 (1.1)1.08 (0.79 to 1.47)
Other and unspecified arthropathies (N06)126 (1.1)58 (0.5) 2.26 (1.50 to 3.41)
Other or unspecified joint disorders (N09)875 (7.7)467 (4.0) 2.00 (1.71 to 2.32)
Spondylosis and allied disorders (N11)656 (5.8)364 (3.1) 1.89 (1.59 to 2.25)
Intervertebral disc disorders (N12)104 (0.9)78 (0.7)1.37 (0.93 to 2.02)
Other cervical disorders (N13)143 (1.3)144 (1.2)1.01 (0.75 to 1.38)
Other and unspecified back disorders (N14)965 (8.5)726 (6.2) 1.39 (1.22 to 1.59)
Polymyalgia rheumatica (N20)73 (0.6)63 (0.5)1.19 (0.76 to 1.86)
Peripheral enthesopathies and allied syndromes (N21)617 (5.4)415 (3.5) 1.59 (1.35 to 1.89)
Synovial, tendon, or bursa disorder (N22)255 (2.2)134 (1.1) 2.03 (1.54 to 2.68)
Muscle, ligament, and fascia disorders (N23)128 (1.1)101 (0.9)1.31 (0.93 to 1.85)
Other soft tissue disorders (N24)791 (7.0)467 (4.0) 1.78 (1.53 to 2.08)
Other bone or cartilage disorders (N33)135 (1.2)88 (0.7) 1.57 (1.10 to 2.24)
Sprain of shoulder and upper arm (S50)129 (1.1)68 (0.6) 2.04 (1.38 to 3.00)
Sprain of knee or leg (S54)159 (1.4)97 (0.8) 1.73 (1.24 to 2.42)
Sprain of ankle or foot (S55)136 (1.2)116 (1.0)1.21 (0.87 to 1.68)
Sprain of pelvic ligament (S56)76 (0.7)68 (0.6)1.13 (0.73 to 1.75)
Sprains of other parts of back (S57)218 (1.9)186 (1.6)1.21 (0.93 to 1.57)
Other sprains and strains (S5y)94 (0.8)75 (0.6)1.30 (0.87 to 1.95)
Open wound of knee, leg, and ankle (SA1)75 (0.7)70 (0.6)1.11 (0.72 to 1.70)
Superficial injury of leg, excluding foot (SD6)79 (0.7)94 (0.8)0.84 (0.57 to 1.25)
Contusion, trunk (SE2)71 (0.6)58 (0.5)1.25 (0.79 to 1.97)
Contusion, leg and unspecified sites (SE4)152 (1.3)83 (0.7) 1.87 (1.31 to 2.66)