Table 1.
Patient demographic and disease characteristics
| Characteristic | Count (%) in all samples n = 310 | Count (%) excluding N0 samples n = 298 |
|---|---|---|
| Age category | ||
| ≤ 50 years | 51 (16) | 48 (16) |
| > 50 years | 259 (84) | 250 (84) |
| Sample type | ||
| Non-Biopsy | 270 (87) | 258 (87) |
| Biopsy | 40 (13) | 40 (13) |
| T-stage1 | ||
| T1 | 2 (1) | 2 (1) |
| T1a | 3 (1) | 3 (1) |
| T1b | 2 (1) | 1 (< 1) |
| T1c | 97 (37) | 94 (37) |
| T2 | 142 (54) | 135 (54) |
| T3 | 15 (6) | 14 (6) |
| T4 | 3 (1) | 3 (1) |
| Unknown2 | 46 | 46 |
| N-stage1 | ||
| N0 | 12 (5) | 0 |
| N1 | 227 (87) | 227 (92) |
| N1mic | 18 (7) | 18 (7) |
| N2 | 2 (1) | 2 (1) |
| N3 | 1 (< 1) | 1 (< 1) |
| Unknown2 | 50 | 50 |
| AJCC anatomic stage1 | ||
| IA | 4 (2) | 0 |
| IIA | 104 (40) | 97 (39) |
| IIB | 133 (51) | 132 (53) |
| IIIA | 16 (6) | 16 (6) |
| IIIB | 2 (1) | 2 (1) |
| IIIC | 1 (< 1) | 1 (< 1) |
| Unknown2 | 50 | 50 |
1Denominator for calculation of percentages in T-stage, N-stage, and AJCC anatomic stage categories did not include those samples with unknown stage
2Stage could be unknown due to missing pathology report (n = 6), unclear report entry (n = 4), or because sample was from a biopsy (n = 40)