Table 1

 Demographic characteristics of study groups

Treatment group
Naproxen 500 mg (n = 403)Placebo (n = 108)
Knee (n = 280)Hip (n = 123)Knee (n = 75)Hip (n = 33)
Values are mean (SD) or n (%).
Sex (female)209 (75%)87 (71%)62 (83%)20(61%)
Age (years)60.0 (8.4)59.4 (8.92)60.5 (8.63)55.9 (7.96)
Primary study joint280 (69%)123 (31%)75 (69%)33 (31%)
Weight (kg)81.1 (15.8)75.3 (15.8)80.3 (13.7)77.0 (14.4)
Height (cm)163 (10.0)164 (9.6)162 (8.0)167 (9.9)
Body mass index (kg/m2)31 (5.3)28 (4.6)31 (5.4)28 (4.5)