Table 1 Overview of the most prominent results
From: Modern psychometrics applied in rheumatology–A systematic review
Variable | PRO-studies | CM-studies | Total-studies | |||
|---|---|---|---|---|---|---|
n | % * | n | % * | n | % * | |
US | 26 | 30.6 | 4 | 28.6 | 30 | 30.3 |
UK | 24 | 28.2 | 2 | 14.3 | 26 | 26.3 |
Netherlands | 11 | 12.9 | 4 | 28.6 | 15 | 15.2 |
Canada | 10 | 11.8 | 1 | 7.1 | 11 | 11.1 |
Other | 32 | 37.6 | 5 | 35.7 | 37 | 37.4 |
Cross-sectional | 76 | 89.4 | 14 | 100.0 | 90 | 90.9 |
Longitudinal | 13 | 15.3 | 2 | 14.3 | 15 | 15.2 |
RA | 43 | 50.6 | 5 | 35.7 | 48 | 48.5 |
OA | 31 | 36.5 | 3 | 21.4 | 34 | 34.3 |
Other | 31 | 36.5 | 7 | 50.0 | 38 | 38.4 |
Overall physical functioning | 33 | 38.8 | 2 | 14.3 | 35 | 35.4 |
Quality of life | 26 | 30.6 | 2 | 14.3 | 28 | 28.3 |
Specific functioning | 10 | 11.8 | 0 | 0.0 | 10 | 10.1 |
Pain | 7 | 8.2 | 0 | 0.0 | 7 | 7.1 |
Psychological constructs | 3 | 3.5 | 0 | 0.0 | 3 | 3.0 |
Work disability | 5 | 5.9 | 0 | 0.0 | 5 | 5.0 |
Disease activity | 0 | 0.0 | 3 | 21.4 | 3 | 3.0 |
Disease damage or radiographic severity | 0 | 0.0 | 3 | 21.4 | 3 | 3.0 |
Other | 11 | 12.9 | 4 | 28.6 | 15 | 15.2 |
Development/evaluation new measures | 25 | 29.4 | 2 | 14.3 | 27 | 31.4 |
Evaluation existing measures | 31 | 36.5 | 6 | 42.9 | 37 | 37.4 |
Development/evaluation alternate/short form | 11 | 12.9 | 2 | 14.3 | 13 | 13.1 |
Development item bank or CAT | 4 | 4.7 | 0 | 0.0 | 4 | 4.0 |
Cross-cultural validation | 7 | 8.2 | 2 | 14.3 | 9 | 9.1 |
Other | 11 | 12.9 | 3 | 21.4 | 14 | 14.1 |
Bigsteps/Winsteps | 28 | 32.9 | 3 | 21.4 | 31 | 31.3 |
RUMM | 29 | 34.1 | 6 | 42.9 | 35 | 35.4 |
Other/not specified | 29 | 34.1 | 5 | 35.7 | 34 | 34.3 |
Rasch | 72 | 84.7 | 12 | 85.7 | 84 | 84.8 |
2-PLM | 13 | 15.3 | 1 | 7.1 | 14 | 14.1 |
Mokken | 3 | 3.5 | 1 | 7.1 | 4 | 4.0 |
Unidimensionality | 65 | 76.5 | 10 | 71.4 | 75 | 75.8 |
Local independence | 16 | 18.8 | 1 | 7.1 | 17 | 17.2 |
Appropriateness model (fit analyses) | 77 | 90.6 | 13 | 92.9 | 90 | 90.9 |
DIF | 50 | 58.8 | 6 | 42.9 | 56 | 56.6 |
Person/item separation/reliability | 52 | 61.2 | 10 | 71.4 | 62 | 62.6 |
Hierarchical ordering/distribution of items/persons | 57 | 67.1 | 9 | 64.3 | 66 | 66.7 |
Rating scale analysis | 30 | 35.3 | 7 | 50.0 | 37 | 37.4 |
Measurement precision of the scale | 10 | 11.8 | 1 | 7.1 | 11 | 11.1 |