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Table 3 Characteristics of participants enrolled in an OAK programa

From: A randomised controlled trial of a self-management education program for osteoarthritis of the knee delivered by health care professionals

Characteristics Control OAK Pvalue
Mean age (SD), years 65 (8.7) 65 (7.9)  
Gender (M:F) 23:52 14:57  
Socioeconomic index by post code [27] in quintiles, n (%)   
   Top 25% 43 (57) 46 (65)  
   50% to 75% 10 (13) 9 (13)  
   25% to 50% 6 (8) 8 (11)  
   10% to 25% 11 (15) 6 (8)  
   Bottom 10% 5 (7) 2 (3)  
Coexisting disease, n (%)a   
   Total number 156 156  
   Cardiovascular 48 (64) 56 (79)  
   Gastrointestinal 17 (22) 21 (29)  
   Musculoskeletal (other than knee OA) 32 (43) 12 (17)  
   Mental health 6 (8) 7 (10)  
   Endocrine 18 (24) 13 (18)  
   Osteoporosis 8 (11) 8 (11)  
   Other 27 (36) 39 (55)  
   None 9 people (12%) 6 people (8.5%)  
   Multiple coexisting diseases 49 people (65%) 43 people (60%)  
   Mean (SD) incidence per person 2.39 (1.4) 2.43 (1.65)  
SF-36b    
   Physical function 43.98 (21.2) 50.41 (22.2) 0.078
   Role physical 28.38 (36.6) 40.00 (39.7) 0.070
   Body pain 42.00 (19.1) 49.73 (19.0) 0.016
   General health 64.81 (17.2) 65.05 (18.4) 0.936
   Vitality 52.70 (21.0) 55.86 (16.4) 0.321
   Social function 69.43 (26.1) 75.54 (22.1) 0.133
   Role emotional 57.66 (43.1) 66.19 (42.6) 0.235
   Mental health 74.92 (15.1) 75.94 (14.8) 0.683
   WOMAC pain 8.00 (3.6) 6.53 (3.7) 0.020
  1. aOA: osteoarthritis; OAK: Osteoarthritis of the Knee Self-Management Program; SF-36: Short Form 36 version 1 questionnaire; WOMAC: Western Ontario and McMaster Universities Arthritis Index. bPercentage adds to > 100% because some participants had more than one coexisting disease. cUnadjusted baseline values, mean (SD) control and OAK groups.