Table 6 Historic Mirels 1989 study
From: Internal validation of modified Mirels’ scoring system for pathologic femur fractures
Dataset | Mirels 1989 | Current COMBINED Test & Internal Validation Dataset | |
|---|---|---|---|
Number of patients | 38 | 80 | |
Fracture prevalence | 35% | 14.8% | |
Follow-up period | 6-month w/radiation therapy | 4-month | |
Cancer etiology | Breast 64%, Myeloma 14%, Prostate 7.6%, Lung 6.4% | Breast 25%, Myeloma 30%, Prostate 12.5%, Lung 10% | |
Lesion locations | Peritrochanteric 58%, Upper extremity 22%, lower extremity 20% | Proximal Femur 100% | |
Probability of Fracture (p) | |||
Mirels’ score | OM | OM | MM |
4 | 0 | 0 | 0 |
5 | 0 | 0 | 0 |
6 | 0 | 0 | 0 |
7 | 0.04 | 0.015 | 0.01 |
8 | 0.15 | 0.042 | 0.037 |
9 | 0.33 | 0.11 | 0.127 |
10 | 0.72 | 0.264 | 0.36 |
11 | 0.96 | 0.51 | 0.78 |
12 | 1.0 | 0.75 | 0.89 |