Article Figures & Data
Tables
- Table 1.
Interobserver reliability for PsAMRIS in a cross-sectional study of psoriatic arthritis.
ICC (average) SDD % SDDmean Synovitis 0.88 2.01 17 Tenosynovitis 0.84 2.44 26 Periarticular inflammation 0.25 2.28 32 Bone edema 0.86 3.05 27 Bone erosions 0.91 8.77 23 Bone proliferation 0.91 1.34 28 -
ICC: intraclass correlation coefficient; SDD: smallest detectable difference.
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- Table 2.
Median (range) status scores at timepoint A and change scores (over 6 weeks) for each reader.
Reader No. Mean of Readers 1 2 3 4 5 6 7 8 Timepoint A Synovitis, 0–36 9.0 (6;15) 3.5 (0;9) 8.0 (2; 18) 3.0 (0;8) 11.5 (5;19) 2.5 (0;10) 3.5 (0;7) 5.5 (2;9) 5.8 (2.0;11.9) Tenosynovitis, 0–36 10.5 (0;17) 4.5 (0;10) 1.5 (0;9) 1.0 (0;7) 7.0 (1;11) 1.0 (0;7) 0.5 (0:7) 1.5 (0;7) 3.4 (0.1;9.4) Periarticular inflammation, 0–12 2 (0;16) 0.51 (0;11) 1.0 (0;12) 2.0 (0;6) 3.0 (0;8) 0.5 (0;3) 1.5 (0;6) 1.0 (0;7) 1.4 (0;8.6) Bone edema, 0–72 1.5 (0;4) 0.0 (0;3) 0.0 (0;8) 0.0 (0;0) 0.5 (0;16) 0.5 (0;3) 0.0 (0;2) 0.0 (0;7) 0.3 (0;5.3) Bone erosions, 0–240 3.5 (0;13) 2.0 (0;5) 1.1 (0;8) 0.0 (0;4) 3.5 (1;7) 1.0 (0;3) 1.0 (0;3) 1.5 (0;5) 1.7 (0.6;6.0) Bone proliferation, 0–12 0.0 (0;2) 0.0 (0;4) 0.5 (0;6) 0.0 (0;0) 2.0 (0;6) 0.5 (0;5) 1.5 (0;7) 0.5 (0;5) 0.6 (0;4.4) Change scores Synovitis, 0–36 −0.5 (−10;6) 0.0 (−3;2) −1.5 (−10;5) −1.0 (−5;2) 1.0 (−3;8) 0.0 (−7;3) 0.0 (−4;4) 0.5 (−4;3) −0.2 (−5.8;3.9) Tenosynovitis, 0–36 0.0 (−3;4) 0.0 (−3;5) −1.0 (−7;2) −0.5 (−7;3) −0.5 (−6;4) 0.0 (−3;2) 0.0 (−3;3) 0.1 (−3;1) −0.2 (−4.3;3.0) Periarticular inflammation, 0–12 0 (−6;8) 0 (−3;4) 0.0 (−2;2) 0.0 (−6;0) 1.0 (−2;5) 0.0 (−2;2) 0.0 (−2;2) 0.0 (−5;0) 0.1 (−3.5;2.9) Bone edema, 0–72 0.0 (−2;0) 0.0 (−3;0) 0.0 (−6;2) 0.0 (0;0) 1.5 (−1;16) 0.0 (−1;1) 0.0 (−2;1) 0.0 (−4;0) 0.2 (−2.4;2.5) Bone erosions, 0–240 −1.0 (−1;0) 0.0 (0;0) 0.0 (−1;1) 0.0 (−1;0) 0.0 (0;8) 0.0 (−2;1) 0.0 (−1;1) 0.0 (0;1) −0.1 (−0.75;1.5) Bone proliferation, 0–12 0.0 (0;0) 0.0 (0;0) 0.0 (0;1) 0.0 (0;0) 0.0 (0;3) 0.0 (−2;2) 0.0 (−1;3) 0.0 (0;2) 0.0 (−0.4;1.4) - Table 3.
Reliability for interreader scoring of status scores (Timepoint A) and change scores (summed across all joints).
ICC SDD % SDDmax % SDDmean Status Scores Change Scores Change Scores Change Scores Change Scores Total global score Synovitis (0–36) 0.77 0.77 2.69 23 28 Tenosynovitis (0–36) 0.70 0.75 1.85 20 25 Periarticular inflammation (0–12) 0.71 0.70 1.70 20 27 Bone edema (0–72) 0.71 NA 2.46 46 50 Bone erosion (0–240) 0.76 0.57 0.48 8 21 Bone proliferation (0–12) 0.85 −0.21 0.87 22 48 -
ICC: average-measures intraclass correlation coefficient; SDD: smallest detectable difference.
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ICC Status Score Time A ICC Change Scores SDD Score Time A SDD Change Scores Synovitis MCP synovitis (0–12) 0.68 0.66 1.60 2.13 PIP synovitis (0–12) 0.81 0.58 2.43 2.43 DIP synovitis (0–12) 0.65 0.78 0.69 1.12 Tenosynovitis MCP tenosynovitis (0–12) 0.77 0.61 1.06 1.58 PIP tenosynovitis (0–12) 0.63 0.58 0.82 1.77 DIP tenosynovitis (0–12) 0.69 0.75 0.70 1.29 Periarticular inflammation MCP periarticular inflammation (0–4) 0.41 0.72 0.76 1.36 PIP periarticular inflammation (0–4) 0.66 0.52 1.20 1.76 DIP periarticular inflammation (0–4) 0.73 NA 0.90 0.88 Bone edema MCP bone edema (0–24) 0.76 0.64 0.60 1.98 PIP bone edema (0–24) 0.63 −0.77 1.78 1.20 DIP bone edema (0–24) 0.32 −0.02 1.53 1.43 Bone erosion MCP bone erosion (0–80) 0.82 0.65 0.54 1.37 PIP bone erosion (0–80) 0.51 0.10 0.44 0.87 DIP bone erosion (0–80) 0.58 0.38 0.89 0.86 Bone proliferation MCP bone proliferation (0–4) 0.83 0.89 0.18 0.69 PIP bone proliferation (0–4) 0.70 −0.22 0.36 0.78 DIP bone proliferation (0–4) 0.76 NA 0.63 1.08 -
MCP: metacarpophalangeal; PIP: proximal interphalangeal; DIP: distal interphalangeal; ICC: intraclass correlation coefficient; SDD: smallest detectable difference.
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