Table 2 The ability of joint uptake ratio in detecting clinically active joint
Joint | AUC (95% CI) | Cut-off joint uptake ratio | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | PPV (%) (95% CI) | NPV (%) (95% CI) |
|---|---|---|---|---|---|---|
Shoulder (n = 130) | 0.638 (0.527–0.751) | 1.47 | 81.8 (59.7–94.8) | 46.3 (36.7–56.2) | 23.7 (19.3–28.8) | 92.6 (83.4–96.9) |
Elbow (n = 129) | 0.852 (0.754–0.925) | 1.31 | 75.0 (50.9–91.3) | 83.5 (75.2–89.9) | 45.5 (33.7–55.7) | 94.8 (89.5–97.5) |
Wrist (n = 130) | 0.906 (0.843–0.950) | 1.86 | 93.2 (84.9–97.8) | 78.6 (65.6–88.4) | 85.2 (77.6–90.5) | 89.8 (78.9–95.4) |
MCP (n = 650) | 0.812 (0.754–0.857) | 1.23 | 81.3 (71.8–88.7) | 62.1 (57.9–66.1) | 25.9 (23.2–28.7) | 95.3 (93.0–96.9) |
Hand IP (n = 650) | 0.688 (0.641–0.740) | 0.90 | 76.0 (68.9–82.2) | 47.4 (42.8–52.0) | 34.0 (31.4–36.8) | 84.7 (80.7–88.0) |
Knee (n = 128) | 0.782 (0.678–0.863) | 1.37 | 85.0 (70.2–94.3) | 61.4 (50.4–71.6) | 50.0 (42.7–57.3) | 90.0 (80.9–95.0) |
Total (n = 1817) | 0.752 (0.724–0.778) | 1.07 | 78.7 (74.5–82.5) | 52.0 (49.4–54.7) | 32.9 (31.3–34.6) | 89.1 (87.1–90.8) |