Table 3. Results of multiple logistic regression analysis of a negative treatment response in iRBD patients.
| Variable | OR | 95% CI | p |
|---|---|---|---|
| Depression | 3.76 | 1.15–12.32 | 0.029 |
| Age, years | 0.97 | 0.90–1.04 | 0.336 |
| Sex, male | 0.68 | 0.21–2.17 | 0.509 |
| Symptom duration, years | 1.02 | 0.91–1.14 | 0.757 |
| RBDQ-KR score | 0.98 | 0.95–1.01 | 0.223 |
| Excessive daytime sleepiness | 5.08 | 0.99–26.04 | 0.051 |
| Sleep latency, min | 0.97 | 0.93–1.02 | 0.216 |
| AHI, events/h | 0.99 | 0.93–1.07 | 0.875 |
| Medication (vs. melatonin only) | 0.489 | ||
| Clonazepam only | 1.21 | 0.31–4.82 | 0.782 |
| Clonazepam and melatonin | 2.54 | 0.54–11.91 | 0.236 |
AHI: apnea-hypopnea index, CI: confidence interval, iRBD: idiopathic REM sleep behavior disorder, OR: odds ratio, RBDQ-KR: Korean version of the REM sleep Behavior Disorder Questionnaire–Hong Kong.