Comparison of PET Positivity According to Visual Analysis and Clinical or US Positivity
| Joints (n) | Odd ratio* (95% CI) | ||||
|---|---|---|---|---|---|
| Swelling | Tenderness | US positivity | |||
| All (356) | 4.8 (2.9–8) | 8.6 (4.8–15.6) | 11.7 (7–19.7) | ||
| Knees (42) | 3.4 (0.8–13.4) | 4.6 (2.2–18.5) | 9.0 (1.8–45) | ||
| Wrists† (25) | 10.0 (0.9–187) | 10.0 (0.9–187) | 10.0 (0.6–181) | ||
| MCP (129) | 20 (4.5–89) | 57 (2.7–162) | 2.6 (1.7–3.4) | ||
| PIP (128) | 5.1 (2.3–11.5) | 13.6 (4.7–40) | 22.5 (6.3–78) | ||
| Ankles‡ (16) | 0.8 (0.3–2.1) | NA | NA | ||
| MTP-1§ (16) | NA | NA | 6.1 (0.5–78) | ||
↵* Odd ratios in bold type are statistically significant.
↵† Of 22 PET-positive wrists, 19 were swollen or tender and 20 were US positive.
↵‡ Of 10 PET-positive ankles, 8 were swollen, 10 were tender, and 7 were US positive.
↵§ Of 9 PET-positive MTP-1 joints, 9 were swollen, 7 were tender, and 8 were US positive.
NA = nonapplicable because of no value in some categories.