Table 8. Nodal Involvement in Breast Cancer Screening Frequencies Occurring Annually, Biennially, and Less Frequent Than Biennially.
| Node involvement | Screening frequency |
Total | ||
|---|---|---|---|---|
| Annual | Biennial | Less frequent than biennial | ||
| N0 | 76 (7.4%) | 25 (10.3%) | 6 (9.4%) | 107 (8.1%) |
| N1 | 715 (70.0%) | 184 (76.0%) | 44 (68.8%) | 943 (71.1%) |
| N2 | 188 (18.4%) | 25 (10.3%) | 13 (20.3%) | 226 (17.0%) |
| NX | 11 (1.1%) | 4 (1.7%) | 0 (0.0%) | 15 (1.1%) |
| Total | 1,021 (100.0%) | 242 (100.0%) | 64 (100.0%) | 1,327 (100.0%) |
χ2 = 14.8, df = 8, Cramer’s V = 0.10.