Variable | All | Cluster 1 | Cluster 2 | Cluster 3 | P -value |
---|---|---|---|---|---|
( n = 107) | ( n = 24) | ( n = 48) | ( n = 35) | ||
Age (years; mean ± SD) | 56.9 ± 12.8 | 64.6 ± 10.6 | 56.8 ± 12.9 | 51.9 ± 11.7 | 0.0006 |
SBR grade | |||||
1 | 2 | 2 | 0 | 0 | |
2 | 14 | 10 | 1 | 3 | |
3 | 91 | 12 | 47 | 32 | <0.0001 |
Tumour size (mm; mean ± SD) | 22.3 ± 12.7 | 27.3 ± 18.3 | 22.8 ± 12.1 | 18.5 ± 7.0 | 0.184 |
Nodal status | |||||
0 | 77 | 17 | 38 | 22 | |
1 | 30 | 7 | 10 | 13 | 0.266 |
NPI | |||||
1 | 13 | 9 | 1 | 3 | |
2 | 71 | 8 | 40 | 23 | |
3 | 22 | 6 | 7 | 9 | <0.0001 |
Radiotherapy | |||||
No | 4 | 2 | 1 | 1 | |
Yes | 103 | 22 | 47 | 34 | 0.436 |
Adjuvant therapy | |||||
No | 12 | 6 | 4 | 2 | |
Yes | 95 | 18 | 44 | 33 | 0.071 |
Hormonotherapy | |||||
No | 106 | 23 | 48 | 35 | |
Yes | 1 | 1 | 0 | 0 | 0.224 |