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Demographic variables in patients < 65 years and > 65 years.
| Demographic variable | < 65 years | > 65 years | p |
|---|---|---|---|
| N | 1049 | 449 | |
| Mean age (years) | 52 | 76 | |
| Presentation | |||
| Palpable mass | 314 (31%) | 130 (29%) | NS |
| Mx calcification | 304 (29%) | 63 (14%) | <0.01 |
| Mx mass | 199 (19%) | 130 (29%) | <0.01 |
| Mx abnormality | 10 (1%) | 4 (1%) | NS |
| Other | 222 (20%) | 122 (27%) | <0.01 |
| Diagnostic method | |||
| Excisional biopsy | 241 (23%) | 108 (24%) | NS |
| Fine-needle aspiration | 524 (50%) | 229 (51%) | NS |
| Core Needle aspiration | 283 (27%) | 112 (25%) | NS |
