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Chi-square statistics: Number (%) of positive criteria - BN versus cancer
| BN vs. cancer: | BN | Cancer | Χ2 | p-value |
|---|---|---|---|---|
| Mild hypoechogenicity | 55/142 (39%) | 19/53 (36%) | 0.136 | 0.712 |
| Marked hypoechogenicity | 26/142 (18%) | 22/53 (42%) | 11.194 | 0.001 |
| Microlobulated/ irregular margins | 39/142 (27%) | 29/53 (55%) | 12.621 | 0.0004 |
| Microcalcifications | 10/142 (7%) | 16/53 (30%) | 17.894 | 0.00002 |
| Taller than wide | 17/142 (12%) | 15/53 (28%) | 7.503 | 0.006 |
| No thin halo | 99/142 (70%) | 47/53 (89%) | 7.375 | 0.007 |
