Table 1.
Characteristics of patients and lesions
| Variable | Benign (n=90) | Malignant (n=49) | P-value |
|---|---|---|---|
| Patient age (yr) | |||
| Mean±SD | 42.5±10.5 | 55.4±12.8 | <0.001 |
| Range | 20-72 | 25-76 | |
| Lesion size (cm) | |||
| Mean±SD | 11.7±6.4 | 17.7±15.6 | 0.012 |
| Range | 0.4-4.2 | 0.4-96 | |
| CDDa) | |||
| Symptoms | 16 | 24 | <0.001 |
| Past breast cancer history | 8 | 21 | <0.001 |
| Past breast biopsy history | 32 | 35 | <0.001 |
| Past screening history | 80 | 47 | 0.214 |
| Menopause | 16 | 21 | <0.001 |
SD, standard deviation; CDD, clinical and demographic data.
a)
Numbers indicate the presence of each CDD variable.