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| Group | TI-RADS classification | χ2 | P | |||
|---|---|---|---|---|---|---|
| I | II | III | IV | |||
| CDFI | 27 | 4 | 7 | 2 | 24.085 | 0.000 |
| SMI | 5 | 5 | 26 | 4 | ||
| χ2 | 25.208 | 0.125 | 18.620 | 0.180 | ||
| P | 0.000 | 0.723 | 0.000 | 0.671 | ||
TI-RADS, Thyroid Imaging Reporting and Data System; CDFI, color Doppler imaging; SMI, superb micro-vascular imaging.
