Stratification of patients (n = 70) and tumour characteristics and respective success rates, accuracy, and false negative rate (FNR)
| Parameter | No of cases | Success rate | Accuracy | FNR |
|---|---|---|---|---|
| *p = 0.06. | ||||
| Age (years) | ||||
| <50 | 40 | 97.5 | 97.4 | 2.6* |
| >50 | 30 | 93.3 | 85.7 | 14.3 |
| Tumour size (cm) | ||||
| ⩽2 | 26 | 96.2 | 100 | 0 |
| >2 | 35 | 94.3 | 84.8 | 15.2 |
| After biopsy | 9 | 100 | 100 | 0 |
| Location of lesion | ||||
| Outer upper | 38 | 92.1 | 88.6 | 11.4 |
| Other quadrants | 32 | 100 | 96.9 | 3.1 |