Wrist | MCP Flexor Tendons | Total Score | |||||
---|---|---|---|---|---|---|---|
Baseline | Change | Baseline | Change | Baseline | Change | ||
Intrareader ICC and SDC, Reader 1 | smICC (95% CI) SDC (% patients ≥ SDC) [%MOC] | 0.91 (0.82–0.95) | 0.82 (0.69–0.90) 1.8 (54.7) [18.9] | 0.89 (0.80–0.94) | 0.81 (0.68–0.89) 1.1 (22.1) [15.5] | 0.90 (0.82–0.95) | 0.88 (0.79–0.93) 2.1 (39.5) [13.5] |
Intrareader ICC and SDC, Reader 2 | smICC (95% CI) SDC (% patients ≥ SDC) [%MOC] | 0.93 (0.87–0.96) | 0.80 (0.67–0.89) 2.0 (57.0) [18.2] | 0.88 (0.79–0.93) | 0.83 (0.71–0.90) 1.2 (23.3) [10.6] | 0.94 (0.90–0.97) | 0.83 (0.70–0.90) 2.7 (40.7) [13.3] |
Intrareader ICC and SDC, Reader 3 | smICC (95% CI) SDC (% patients ≥ SDC) [%MOC] | 0.84 (0.72–0.91) | 0.76 (0.59–0.86) 2.9 (48.8) [22.8] | 0.79 (0.65–0.88) | 0.68 (0.48–0.81) 1.8 (44.2) [23.8] | 0.87 (0.77–0.93) | 0.84 (0.73–0.91) 3.0 (54.7) [15.8] |
Intrareader ICC and SDC, Reader 4 | smICC (95% CI) SDC (% patients ≥ SDC) [%MOC] | 0.94 (0.89–0.97) | 0.64 (0.42–0.79) 2.3 (37.2) [29.7] | 0.92 (0.85–0.96) | 0.87 (0.78–0.93) 1.1 (44.2) [13.5] | 0.95 (0.91–0.97) | 0.80 (0.67–0.88) 2.7 (50.0) [18.1] |
Intrareader PEA and PCA, %, average | PEA | 76.7 | 75.4 | 73.4 | 70.3 | 75.7 | 73.8 |
PCA | 98.3 | 97.4 | 99.4 | 98.0 | 98.6 | 97.6 | |
Interreader ICC and SDC | avmICC (95% CI) SDC (% patients ≥ SDC) [%MOC] | 0.94 (0.87–0.97) | 0.91 (0.86–0.95) 1.7 (49.4) [17.1] | 0.96 (0.93–0.98) | 0.94 (0.91–0.97) 0.9 (50.6) [10.2] | 0.96 (0.90–0.98) | 0.94 (0.90–0.96) 1.8 (60.5) [10.2] |
Interreader PEA and PCA, % | PEA | 42.5 | 50.3 | 41.0 | 42.4 | 42.0 | 47.9 |
PCA | 81.1 | 84.0 | 86.9 | 87.2 | 82.9 | 85.0 |
An intraclass correlation (ICC) ≥ 0.50 was considered good and an ICC ≥ 0.80 was considered very good. The smallest detectable change (SDC) was calculated for the change scores and expresses the lowest amount of change that can be considered as true change and not measurement error. The percentage of exact agreement (PEA) was defined as the percentage of individual tendons having an exact agreement between the 2 reads for intrareader agreement and between the 4 readers for interreader agreement. The percentage of close agreement (PCA) was defined as the percentage of tendons with agreement differing ≤ 1. PEA and PCA are presented as the average percentages for total scores. TS: tenosynovitis; MCP: metacarpophalangeal; %MOC: percentage of maximum observed change; smICC: single measure ICC; avmICC: average measure ICC.