Combined Structural and Synovial Assessment for Improved Ultrasound Discrimination of Rheumatoid, Osteoarthritic, and Normal Joints: A Pilot Study

Table 3: Sensitivity (Sensitivity-RA) and Specificity for the Diagnosis of RA when Compared to Osteoarthritis (Specificity-O), Healthy (Specificity-H), and All Controls (Specificity-All) Using the Semiquantitative Synovial Score and the Combined Structural/Synovial Score

"RA-Supported" >0	Semiquantitative Synovial Score	Combined Structural/Synovial Score
Sensitivity-RA	1	0.95
Specificity-O	0	0.57
Specificity-H	0	0.94
Specificity-All	0	0.77
"RA-supported" >1	Semiquantitative Synovial Score	Combined Structural/Synovial Score
Sensitivity-RA	1	0.73
Specificity-O	0	0.93
Specificity-H	0	1
Specificity-All	0	0.97

The top half of the table shows results when a patient is diagnosed as RA if any joint is classified as “RA-supported”, and the bottom half shows results when a patient is diagnosed as RA if more than one joint is classified as “RA-supported”.