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Table 4 Z-Score sensitivity and specificity based on computer-aided joint space analysis dependent on onset of erosions

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

Z-Score Sensitivity (%) Specificity (%)
Metacarpal-phalangeal joint   
   Thumb 73.2 51.7
   Index finger 87.9 55.2
   Middle finger 75.8 55.2
   Ring finger 70.1 51.7
   Little finger 77.1 51.7
   Total 85.4 55.2
Proximal-interphalangeal joint   
   Index finger 74.5 44.8
   Middle finger 70.7 58.6
   Ring finger 69.4 58.6
   Little finger 63.1 51.7
   Total 67.5 51.7
Distal-interphalangeal joint   
   Index finger 58.6 41.4
   Middle finger 53.5 48.3
   Ring finger 62.4 41.4
   Little finger 51.0 48.3
   Total 53.5 37.9