Degree of caudate involvement in 267 patients with an available DATscan at 4-year follow-up and relationship to original PD subgroups
| Baseline PD subgroups (n=267) | No caudate involvement at 4 years (n, %) | Unilateral caudate involvement at 4 years (n, %) | Bilateral caudate involvement at 4 years (n, %) | Total number of patients |
| PD-NC group (n, %) | 43 (32.1%) | 44 (32.8%) | 47 (35.1%) | 134 |
| PD-UC group (n, %) | – | 16 (21.6%) | 58 (78.4%) | 74 |
| PD-BC group (n, %) | – | – | 59 (100%) | 59 |
| Total (n, %) | 43 (16.1%) | 60 (22.5%) | 164 (61.4%) | 267 |
Percentages and total number of patients are relative to each row.
PD-BC, bilaterally reduced caudate binding; PD-NC, no reduced 123I-FP-CIT binding in either caudate; PD-UC, reduced 123I-FP-CIT binding in one caudate only.