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Table 3 Summary of enhancement ratios and relative signal intensity changes for synovial enhancement

From: MRI thresholds for discrimination between normal and mild temporomandibular joint involvement in juvenile idiopathic arthritis

Enhancement ratio Mean 95 % confidence interval P value (RC) P value (NRC) P value (NRC 1.5 T) P value (NRC 3.0 T)
Non-rheumatologic control (48) 0.090 −0.0478 – 0.227 0.04 -
Rheumatologic control (60) 0.480 0.335 – 0.626 0.04 0.47 0.03
Mild (40) 1.045 0.824 – 1.266 0.001 <0.0001 0.001 <0.0001
Moderate/severe (34) 2.188 1.786 – 2.577 <0.0001 <0.0001 <0.0001 <0.0001
Relative signal intensity change Mean 95 % confidence interval P value (RC) P value (NRC) P value (NRC 1.5 T) P value (NRC 3.0 T)
Non–rheumatologic control (48) 0.660 0.401 – 0.919 1.00
Rheumatologic control (60) 0.433 0.229 – 0.638 1.00 1.00 0.18
Mild (40) 0.919 0.640 – 1.197 0.10 1.00 0.20 1.00
Moderate/severe (34) 1.953 1.487 – 2.420 <0.0001 <0.0001 <0.0001 <0.0001
  1. The P values represent comparisons between TMJs with mild or moderate/severe synovial enhancement (based on qualitative assessment) and the results from the rheumatologic (RC) and non-rheumatologic control groups (NRC). The non-rheumatologic control group was further separated into MRI examinations that were performed under 1.5 T and 3.0 T. Further comparison is made between the two subgroups and the TMJs of JIA patients. The number in () represents the number of TMJs in each group