Skip to main content

Table 3 Site-by-site CT analysis.

From: Characterization of new bone formation in gout: a quantitative site-by-site analysis using plain radiography and computed tomography

   Erosion present, number Erosion absent, number OR (95%CI) P Erosion diameter, in eroded joints, mean (SD) P Tophus present, number Tophus absent, number OR (95%CI) P Tophus diameter, in joints with IO tophus, mean (SD) P
Spur Present 127 14 45.1 <0.0001 7.0 (3.7) <0.0001 121 20 48.4 <0.0001 10.9 (7.9) 0.02
  Absent 110 547 (25.0-81.3)   4.5 (3.0)   73 584 (28.4-82.4)   8.2 (6.7)  
Osteophyte Present 116 127 3.3 <0.0001 5.6 (3.2) 0.27 99 144 3.3 <0.0001 8.4 (5.3) 0.006
  Absent 121 434 (2.4-4.5)   6.1 (3.9)   95 460 (2.4-4.7)   11.3 (9.1)  
Periosteal NBF Present 41 7 16.6 <0.0001 7.2 (4.4) 0.0005 38 10 14.5 <0.0001 10.4 (7.9) 0.65
  Absent 196 554 (7.3-37.5)   5.5 (3.3)   156 594 (7.1-27.0)   9.7 (7.5)  
Ankylosis Present 5 0 26.6 0.002 8.3 (3.1) 0.11 5 0 35.1 0.0008 10.7 (7.3) 0.80
  Absent 232 561 (1.5-482.7)   5.8 (3.8)   189 604 (1.9-638.0)   9.8 (7.6)  
Sclerosis Present 179 49 32.3 <0.0001 6.5 (3.8) <0.0001 161 67 39.1 <0.0001 10.4 (7.9) 0.03
  Absent 58 512 (21.3-48.9)   3.9 (2.0)   33 537 (24.9-61.5)   7.3 (4.6)  
  1. Relationship of new bone formation (NBF) with erosion and intraosseous tophus on CT (n = 798 joints). CI, confidence interval; CT, computed tomography; OR, odds ratio; SD, standard deviation.