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Table 1 Finger joint space width reduction estimated by computer-aided joint space analysis for metacarpal-phalangeal articulation

From: Joint damage in rheumatoid arthritis: assessment of a new scoring method

  Z-Score
Average Sharp Score for joint space narrowing MCP (thumb) MCP (index finger) MCP (middle finger) MCP (ring finger) MCP (little finger) MCP (total)
0 0.27 ± 0.62 0.46 ± 0.62 0.32 ± 0.61 0.21 ± 0.55 0.15 ± 0.58 0.24 ± 0.33
1 -0.31 ± 0.70 -0.37 ± 0.83 -0.11 ± 0.58 -0.05 ± 0.66 -0.11 ± 0.60 -0.16 ± 0.29
2 -0.39 ± 0.82 -0.70 ± 0.96 -0.39 ± 0.91 -0.11 ± 0.82 -0.33 ± 0.78 -0.39 ± 0.44
3 -1.46 ± 1.54 -1.91 ± 1.57 -1.45 ± 1.69 -1.18 ± 1.30 -1.41 ± 1.59 -1.41 ± 1.01
Difference between score 0 and 3 1.74 ± 0.42 2.37 ± 0.43 1.77 ± 0.46 1.39 ± 0.36 1.56 ± 0.43 1.65 ± 0.30
Significance, P <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
  1. Data presented as mean ± standard deviation. Reduction of finger joint space widths from score 0 to 3 using the average Sharp-van der Heijde score as estimated by computer-aided joint space analysis for the metacarpal-phalangeal (MCP) articulation.