TABLE III.
American College of Radiology Thyroid Imaging Reporting and Data System (ACR TI-RADS) Scores.
| Overall (N = 106) n (%) | Benign (N = 47) n (%) | Malignant (N = 59) n (%) | Malignant versus benign |
||
|---|---|---|---|---|---|
| OR (95% CI) | p | ||||
|
| |||||
| ACR TI-RADS level | 2.48 (1.62–3.98) | <0.001 | |||
| 0.5–1 | 3 (2.8%) | 3 (6.4%) | 0 (0.0%) | ||
| 1.5–2 | 12 (11.3%) | 9 (19.1%) | 3 (5.1%) | ||
| 2.5–3 | 22 (20.8%) | 14 (29.8%) | 8 (13.6%) | ||
| 3.5–4 | 29 (27.4%) | 13 (27.7%) | 16 (27.1%) | ||
| 4.5–5 | 40 (37.7%) | 8 (17.0%) | 32 (54.2%) | ||
|
| |||||
| Median (range) | Median (range) | Median (range) | z | p | |
|
| |||||
| ACR TI-RADS points | 4.5 (0–13) | 3.5 (0–11) | 7 (2–13) | −4.56 | <0.001 |
| ACR TI-RADS level | 4 (0–5) | 3 (1–5) | 4.5 (2–5) | −4.62 | <0.001 |
| Subscale scores | |||||
| Composition | 2 (0–3) | 1 (0–2) | 2 (1–2) | −5.75 | <0.001 |
| Shape | 0 (0–3) | 0 (0–3) | 0 (0–3) | −2.01 | 0.063 |
| Margin | 0 (0–3) | 0 (0–1.5) | 0 (0–3) | −3.45 | <0.001 |
| Echogenic foci | 1 (1–5.5) | 0 (0–4) | 2 (0–5.5) | −3.00 | 0.002 |
| Largest dimension (cm) | 2.4 (0.3–8.5) | 1.9 (0.3–5.7) | 2.5 (0.3–8.5) | −0.963 | 0.338 |
|
| |||||
| Mean (SD) | Mean (SD) | Mean (SD) | t (df) | p | |
|
| |||||
| Echogenicity | 1.5 (0.6) | 1.2 (0.6) | 1.7 (0.6) | −3.95 (104) | <0.001 |
Note: Bold indicates p < 0.05.
Abbreviations: CI, Confidence interval; df, Degrees of Freedom; OR, Odds Ratio; SD, Standard Deviation.