Table 1.
Patient characteristics
| Parameter | Histology n = 35,143 |
% | OSNA n = 1086 | % | P-value |
|---|---|---|---|---|---|
| Gender | 0.246 | ||||
| Male | 271 | 0.8 | 5 | 0.5 | |
| Female | 34,872 | 99.2 | 1081 | 99.5 | |
| Age (range) in yrs | 63 (20–96) | 65 (29–92) | < 0.001 | ||
| Age (yrs) | < 0.001 | ||||
| ≤ 40 | 1044 | 3.0 | 25 | 2.3 | |
| 41–80 | 31,745 | 90.3 | 941 | 86.6 | |
| ≥ 80 | 2354 | 6.7 | 120 | 11.0 | |
| cT stage | 0.175 | ||||
| T1a/b | 8940 | 25.4 | 295 | 27.2 | |
| T1c | 16,528 | 47.0 | 510 | 47.0 | |
| T2 | 8407 | 23.9 | 234 | 21.5 | |
| T3 | 658 | 1.9 | 21 | 1.9 | |
| Tx | 610 | 1.7 | 26 | 2.4 | |
| Surgical treatment | < 0.001 | ||||
| Breast-conserving treatment | 25,046 | 71. | 711 | 65.5 | |
| Mastectomy | 10,097 | 375 | 34.9 | ||
| Year | 0.323 | ||||
| 2016 | 9050 | 25.8 | 304 | 28.0 | |
| 2017 | 9088 | 25.9 | 271 | 25.0 | |
| 2018 | 8625 | 24.5 | 269 | 24.8 | |
| 2019 | 8380 | 23.8 | 242 | 22.3 |
Significant differences are bold
Statistical analysis was performed using independent sample t test for continuous and Pearson Chi-square test for categorical data