Table 4.
Outcome of IRBD patients.
| Outcome | UPSIT ≥23 | UPSIT <23 | p‐value | |
|---|---|---|---|---|
| 155 | 34 (21.9) | 121 (78.1) | < 0.001 | |
| Disease‐free | 113 | 25 (22.1) | 88 (77.9) | < 0.001 |
| Converted to PD | 17 | 3 (17.6) | 14 (82.4) | 0.013 |
| Converted to DLB | 22 | 3 (13.6) | 19 (86.4) | < 0.001 |
| Converted to MSA | 3 | 3 (100) | 0 (0) | 0.250 |
| UPSIT ≥19 | UPSIT <19 | p‐value | ||
|---|---|---|---|---|
| 155 | 71 (45.8) | 84 (54.2) | 0.335 | |
| Disease‐free | 113 | 57 (50.4) | 56 (49.6) | 1.00 |
| Converted to PD | 17 | 4 (23.5) | 13 (76.5) | 0.49 |
| Converted to DLB | 22 | 7 (31.8) | 15 (68.1) | 0.134 |
| Converted to MSA | 3 | 3 (0) | 0 (0) | 0.250 |
DLB, dementia with Lewy bodies; IRBD, isolated rapid eye sleep behavior disorder; PD, Parkinson's disease; MSA, multiple system atrophy. p‐value, binomial test (two‐tail p‐value). Bold results were statistically significant.