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Table 1 Baseline characteristics of the analysis cohort (n = 2,005)

From: A prospective study of mental health care for comorbid depressed mood in older adults with painful osteoarthritis

Characteristic

Overall

N = 2,005

Mental health score ≥ 60

N = 1,429

Mental health score < 60

N = 576

p-value *

Sex (% female)

73.2

72.2

75.5

0.13

Age in years: mean (S.D.)

70.7 (9.1)

71.2 (8.9)

69.7 (9.4)

0.002

Region (% urban)

43.5

41.5

48.4

0.005

Income (%)

   

< 0.0001

   ≤ $20,000

52.4

47.7

63.9

 

   > $20,000

30.2

33.2

22.6

 

   Missing

17.5

19.0

13.5

 

Education (%)

   

< 0.0001

   < high school graduation

35.7

33.0

42.4

 

   High school graduation

47.5

47.7

47.1

 

   Some post-secondary education

14.9

17.6

8.3

 

   Missing

2.0

1.8

2.3

 

Living arrangements (%)

   

0.16

   Lives alone

30.3

29.5

32.1

 

   Lives with others

66.4

67.5

63.7

 

   In long-term care

1.4

1.1

2.1

 

   missing

2.0

1.9

2.1

 

Race (%)

   

0.082

   Caucasian

93.0

93.1

92.7

 

   Non-Caucasian

3.7

3.2

4.9

 

   Missing

3.3

3.7

2.4

 

Number of comorbidities (%)

   

< 0.0001

   None

29.2

31.0

24.8

 

   1

30.6

32.4

26.0

 

   2

21.0

19.7

24.3

 

   3+

19.2

16.9

24.8

 

Body Mass Index: mean (S.D.)

28.1 (5.4)

28.1 (5.2)

28.0 (5.8)

0.82

SF-36 general health scale /100:

mean (S.D.)

49.2 (22.1)

54.7 (20.7)

35.5 (19.2)

< 0.0001

WOMAC total score /100:

mean (S.D.)

40.3 (19.5)

37.5 (18.6)

47.3 (20.0)

< 0.0001

WOMAC pain score /100:

mean (S.D.)

40.5 (21.7)

37.9 (21.0)

46.8 (21.9)

< 0.0001

Mental Health Subscale score /100:

Mean (S.D.)

68.5 (20.4)

79.0 (11.3)

42.5 (13.2)

< 0.0001

Self-reported depression

    

(% reporting ever depressed or other major mental illness)

16.4

7.2

39.2

< 0.0001

(% reporting treatment for depression or other major mental illness in past year)

9.2

3.2

24.1

< 0.0001

  1. *P values comparing depressed to non-depressed. Fisher's Exact tests were used to compare binary characteristics, chi-square tests were used to compare characteristics with more than 2 categories, t-tests were used to compare normally distributed variables (WOMAC, SF-36, age).