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Table 1 Demographic characteristics of patient respondents for each study.

From: Decision quality instrument for treatment of hip and knee osteoarthritis: a psychometric evaluation

 

Study 1

Study 2

Characteristic

Patients

N = 382

Control group

N = 66

Decision aid group

N = 61

Gender: Male (%)

169 (44)

27 (40.9)

25 (40.9)

Age mean (SD)

62.7 (9.6)

66.1 (9.49)

64.3(10.16)

Race/ethnicity (%)

   

White

359 (95.5)

N/A

N/A

Education (%)

   

≥ College graduate

209 (56)

40 (60.6)

39 (63.9)

Some college

94 (25.2)

N/A

N/A

High school or less

68 (18.1)

26 (39.4)

22 (36.1)

Missing

9 (2.4)

0

0

Income (%)

   

<$30,000

78 (20.5)

5 (7.6)*

7 (11.5)*

$30,000-60,000

70 (18.3)

21 (31.8)**

18 (29.5)**

$60,000-100,000

89 (23.3)

13 (19.7)

21 (34.4)

Over $100,000

93 (24.3)

22 (33.3)

12 (19.7)

Missing

52 (13.6)

5 (7.6)

3 (4.9)

Married/Committed relationship (%)

255 (67.8)

42 (63.6)

38 (62.3)

Months since decision (median, IQR)

11 (7, 15)

Considering decision

Considering decision

Had (or preferred) Surgery (%)

235 (61)

Had surgery

49 (74.2)

Preferred surgery

39 (63.9)

Preferred surgery

Joint: Knee (%)

201 (53)

61 (94)

59 (97)

WOMAC Pain Score mean (SD)

5.6 (4.6)

10.7 (4.2)

11.2 (4.0)

  1. SD = standard deviation; N/A = not asked; FT = fulltime; IQR: interquartile range; * measured < $20,000; ** measured from $20,000; WOMAC = Western Ontario McMasters University Arthiritis Index