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Table 2 Sample characteristics

From: Patient Uncertainty Questionnaire-Rheumatology (PUQ-R): development and validation of a new patient-reported outcome instrument for systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA) in a mixed methods study

  Field test 1 Field test 2
  Total (n = 383) SLE (n = 173) RA (n = 210) Total (N = 279) SLE (N = 165) RA (N = 114)
Age (years)
 Mean (SD) 52.3(16.28) 43.8 (15.2) 59.4 (13.3) 49.93 (14.8) 45.31 (14.3) 56.95 (12.5)
 Range 18–86 18–80 23–86 18–84 18–76 20–84
Disease Duration (years)
 Mean (SD) 12.3 (10.8) 11.1 (9.7) 13.3 (11.7) 15.87 (11.2) 16.04 (10.1) 15.60 (12.5)
 Range 0.08–54 0.08–39 0.25–54 0.50–52 1–40 0.50–52
Gender n (%)
 Female 320 (83.6) 157 (90.7) 163 (77.6) 245 (87.8) 158 (95.8) 87 (76.3)
 Male 63 (16.4) 16 (9.3) 47 (22.4) 34 (12.2) 7 (4.2) 27 (23.7)
Ethnicity n (%)
 White 283 (73.9) 101 (58.4) 182 (86.7) 191 (68.5) 97 (58.8) 94 (82.5)
 Black 45 (11.7) 33 (19.1) 12 (5.7) 43 (15.4) 40 (24.2) 3 (2.6)
 Indian/Pakistani/Bangladeshi 27 (7.0) 21 (12.1) 6 (2.9) 21 (7.6) 15 (9) 6 (5.3)
 Mixed race 11 (2.9) 7 (4.0) 4 (1.9) 6 (2.2) 5 (3.0) 1 (0.9)
 Other 11 (2.9) 9 (5.2) 2 (1.0) 11 (3.9) 8 (4.8) 3 (2.6)
 Missing 6 (1.6) 2 (1.2) 4 (1.9) 7 (2.5) 7 (6.1)