Table 3

Characteristics of participants enrolled in an OAK programa

Characteristics

Control

OAK

P value


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


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.

Coleman et al. Arthritis Research & Therapy 2012 14:R21   doi:10.1186/ar3703

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