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Table 1 Characteristics of participants

From: PROMIS Fatigue short forms are reliable and valid in adults with rheumatoid arthritis

Mean (SD) or %

All Clinic

n = 348

Sites

Online

n = 200

P-value

NY

N = 82

MD

N = 217

AL

N = 49

Age (years)

57 (14)

56 (15)

56 (14)

60 (10)

51 (12)

<.001

Female (%)

81%

85%

80%

78%

84%

.422

Racea (%)

 American Indian or Alaskan

3%

< 1%

3%

4%

 

 Asian

4%

9%

5%

1%

 Black or African American

10%

11%

13%

20%

4%

 Middle Eastern/North African

 Native Hawaiian/Pacific Islander

.2%

0.5%

 White

84%

71%

79%

80%

95%

 Other

1%

2%

2%

 Declined

1%

6%

< 1%

Ethnicity

 Hispanic

7%

16%

4%

2%

6%

.714

Education > High school (%)

79%

91%

76%

74%

93%

<.001

Employment (%)

.011

 Full time

36%

44%

35%

27%

32%

 Part time

8%

6%

9%

6%

8%

 Retired

23%

26%

25%

12%

15%

 Disabled due to RA

22%

14%

19%

49%

32%

 Otherb

11%

9%

12%

6%

15%

Urban

80%

90%

76%

80%

74%

.098

RA Characteristics

 RA duration (years)

14 (11)

13 (12)

13 (10)

17 (12)

10 (10)

<.001

 Patient Global Disease Activity (0–100)

30 (27)

27 (23)

32 (28)

28 (27)

57 (23)

<.001

  1. aMultiple categories selected by some individuals. ^Between clinic and online samples
  2. bOther includes unemployed, homemaker, students, disabled – not due to RA