From: Psychometric properties of a new treatment expectation scale in rheumatoid arthritis: an application of item response theory
n = 138
n (%)
Mean age (SD)
54 (14.30)
Gender
Female
101 (73 %)
Male
37 (27 %)
Ethnicity
White
73 (53 %)
Other
65 (47 %)
Disability
Yes
48 (35 %)
No/Unsure
90 (65 %)