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Table 1 Characteristics of samples in three randomized controlled trials (RCTs)

From: Responsiveness of PROMIS and Patient Health Questionnaire (PHQ) Depression Scales in three clinical trials

Clinical population

Sample 1 CAMEO RCT (N1 = 153)

Sample 2 SPACE RCT (N2 = 240)

Sample 3 SSM RCT (N3 = 258)

Chronic low back pain

Chronic musculoskeletal pain

Stroke survivors

Recruitment setting

Primary care

Primary care

Neurology

Age, mean (SD)

58.1 (9.3)

58.3 (13.7)

61.7 (10.8)

Male, n (%)

140 (91.5)

208 (86.7)

209 (81.0)

Race, n (%)

   

 White

111 (72.5)

207 (86.2)

166 (64.3)

 Black

37 (24.2)

18 (7.5)

78 (30.2)

 Other

5 (3.3)

15 (6.3)

14 (5.4)

Education, n (%)

   

 Less than high school

8 (5.2)

6 (2.5)

31 (12.2)

 High school

49 (32.0)

71 (29.6)

85 (33.3)

 Technical school or some college

74 (48.4)

103 (42.9)

80 (31.4)

 College degree or greater

22 (14.4)

60 (25.0)

59 (23.1)

Marital status, n (%)

   

 Married

81 (52.9)

135 (56.5)

135 (52.5)

 Divorced

43 (28.1)

60 (25.1)

68 (26.5)

 Other

29 (19.0)

44 (18.4)

54 (21.0)

PROMIS T-scores, mean (SD)

   

 Depression 4-item

53.5 (9.9)

50.3 (9.1)

51.3 (9.2)

 Depression 6-item

53.2 (10.3)

49.9 (9.5)

50.5 (10.0)

 Depression 8-item

53.0 (10.2)

49.6 (9.5)

50.3 (9.9)

 Depression short-form

53.0 (10.3)

49.7 (9.7)

50.0 (10.3)

PHQ-9 depression score, mean (SD)

11.1 (6.2)

6.2 (5.0)

7.7 (6.2)

Cross-sectional Global Ratings of Depression (0–4), mean (SD)

2.5 (1.0)

2.0 (0.9)

1.9 (1.0)

DSM-V depressive disorder, n (%)

   

 Major depression

68 (44.4)

36 (15.0)

66 (25.6)

 Minor depression

21 (13.7)

23 (9.6)

21 (8.1)

Disability days in the past 4 weeks, mean (SD)

16.3 (8.6)

10.3 (9.0)

5.1 (7.7)

  1. CAMEO CAre Management for the Effective use of Opioids trial, SPACE Strategies for Prescribing Analgesics Comparative Effectiveness trial, SSM Stroke survivor Self-Management trial