123I-ioflupane SPECT visual ratings in patients with late onset depressive disorder (LOD) and healthy controls (HC)
| 123I-ioflupane rating | Rating type | LOD (n=29) n (%) | HC (n=25) n (%) | P value |
| Normal | Normal | 20 (69) | 21 (84) | |
| Equivocal | 2 (7) | 3 (12) | ||
| Total normal | 22 (76) | 23 (96) | ||
| Abnormal | Abnormal type 1 | 2 (7) | 0 (0) | |
| Abnormal type 2 | 2 (7) | 0 (0) | ||
| Abnormal type 3 | 0 (0) | 0 (0) | ||
| Striatal loss | 3 (10) | 1 (4) | ||
| Total abnormal | 7 (24) | 1 (4) | 0.04 |
Fisher’s exact comparing number of normal and abnormal 123I-ioflupane SPECTs.