Responsiveness of the PsAMRIS features, presented as Guyatt’s effect size (Guyatt’s responsiveness index; GRI) in the foot.
| Total Score | MTP | IP | |
|---|---|---|---|
| Foot | |||
| Synovitis | −1.19 | −1.13 | −0.44 |
| Flexor tenosynovitis | −0.15 | −0.76 | 0.35 |
| Periarticular inflammation | −1.05 | NP* | −0.17 |
| Bone marrow edema | NP* | NP* | NP* |
| Bone erosion | 0.52 | −0.87 | NP* |
| Bone proliferation | 0.00 | 0.00 | NP* |
Values are expressed as the mean of the 3 readers. GRI is interpreted as follows: Excellent: > 1.00 or < −1.00, good: ± 0.80–0.99, moderate: ± 0.50–0.79, poor: ± 0.00–0.49.
* Not possible to calculate owing to zero variance in scores in the placebo group. PsAMRIS: Psoriatic Arthritis MRI Score; MTP: metatarsophalangeal, IP: interphalangeal; MRI: magnetic resonance imaging; MCP: metacarpophalangeal; PIP: proximal interphalangeal; DIP: distal interphalangeal.