Table 3 Specificity, sensitivity, PPV, NPV and Az value of the imaging features in the diagnosis of SCNs
Imaging features | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | Az value (95% CI) |
|---|---|---|---|---|---|
Head/neck location | 47.4% (31.3–64.0%) | 83.9% (65.5–93.9%) | 78.3% (55.8–91.7%) | 56.5% (41.2–70.8%) | 0.656 (52.7–78.6%) |
Lobulated shape | 55.3% (38.5–71.0%) | 87.1% (69.2–95.8%) | 84.0% (63.1–94.7%) | 61.3% (45.5–75.3%) | 0.712 (58.9–83.5%) |
Thin wall | 76.3% (59.3–88.0%) | 67.7% (48.5–82.7%) | 74.4% (57.6–96.4%) | 70.0% (50.4–84.6%) | 0.720 (59.6–84.5%) |
> 2 septa | 71.1% (53.9–84.0%) | 64.5% (45.4–80.2%) | 71.1% (53.9–84.0%) | 64.5% (45.3–80.2%) | 0.678 (54.9–80.7%) |
Two features | 84.2% (68.1–93.4%) | 80.6% (61.9–91.9%) | 84.2% (68.1–93.4%) | 80.6% (61.9–91.9%) | 0.824 (71.9–93.0%) |
Three features | 55.3% (38.5–71.0%) | 93.5% (77.2–98.9%) | 91.3% (70.5–98.5%) | 63.0% (47.5–76.4%) | 0.744 (62.7–86.1%) |
Four features | 15.8% (6.6–31.9%) | 100% (86.2–100%) | 100% (51.7–100%) | 49.2% (36.5–62.0%) | 0.579 (44.5–71.3%) |