Table 3.
Systematic error for intrareader measurements by nodule margin
| Nodule margin | Reader pairs | |||||
|---|---|---|---|---|---|---|
| Systematic error (95% -LoA) | ||||||
| 1 vs 2 | 1 vs 3 | 2 vs 3 | ||||
| Abs. (mm) | Rel. (%) | Abs. (mm) | Rel. (%) | Abs. (mm) | Rel. (%) | |
| Smooth | −0.7a (±1.4) | −11a (±21) | −0.1 (±1.5) | −1 (±26) | 0.7a (±1.8) | 11 (±29) |
| Lobulated | −0.5a (±1.5) | −8a (±24) | −0.3 (±2.1) | −3 (±30) | 0.2 (±2.1) | 4a (±32) |
| Spiculated | −1.2a (±2.7) | −14a (±31) | 0.0 (±3.2) | 2 (±42) | 1.2a (±2.8) | 17 (±39) |
| Irregular | 0.1 (±5.9) | 0 (±57) | 0.7a (±3.4) | 9a (±35) | 0.6 (±3.8) | 8a (±39) |
| Total | −0.6a (±3.5) | 8a (±37) | 0.1 (±2.7) | 2a (±34) | 0.6a (±2.8) | 10a (±36) |
95%-LoA, 95% limits of agreement; Abs, absolute systematic error; Rel (%), relative difference in percentage.
Number in brackets is 95%-LoA.
a
Significant difference p < 0.05 (Wilcoxon).