Table 5 Detection and scoring of erosions at metacarpophalangeal and proximal interphalangeal joints (n = 136).
| Joint | Erosions | κ† | CI† | p value† (McNemar) | |
|---|---|---|---|---|---|
| Low‐field MRI (n)* | Conventional MRI (n)* | ||||
| 2nd MCP | 11 | 12 | 0.96 | 0.90 to 1.01 | 1.000 |
| 3rd MCP | 10 | 8 | 0.89 | 0.78 to 1.00 | 0.125 |
| 4th MCP | 6 | 6 | 0.92 | 0.80 to 1.00 | 1.000 |
| 5th MCP | 9 | 8 | 0.77 | 0.59 to 0.95 | 0.812 |
| 2nd PIP | 2 | 1 | 0.65 | 0.35 to 0.96 | 0.500 |
| 3rd PIP | 3 | 2 | 0.73 | 0.50 to 0.97 | 0.500 |
| 4th PIP | 1 | 1 | 0.79 | 0.78 to 0.80 | 1.000 |
| 5th PIP | 1 | 1 | 0.79 | 0.78 to 0.80 | 1.000 |
| Total | 43 | 39 | |||
MCP, metacarpophalangeal joint; PIP, proximal interphalangeal joint.
*Number of affected joints.
†Based on scoring results of individual joints.