Table 2. Distribution of the K-QUIP-RS scores in the Parkinson's disease patients included in this study.
| K-QUIP-RS domain | Mean±SD | Median (range) | n (%) for score ≥1 | n (%) for score ≥ suggested cutoff* |
|---|---|---|---|---|
| Gambling | 0.3±1.3 | 0 (0–12) | 8 (5.9) | 1 (0.7) |
| Hypersexuality | 0.2±0.9 | 0 (0–7) | 13 (9.6) | 0 (0.0) |
| Buying | 0.2±0.8 | 0 (0–5) | 16 (11.8) | 0 (0.0) |
| Eating | 0.5±1.2 | 0 (0–8) | 28 (20.6) | 1 (0.7) |
| Hobbyism/punding | 1.1±2.6 | 0 (0–18) | 33 (24.3) | 6 (4.4) |
| DDS | 0.2±1.2 | 0 (0–10) | 6 (4.4) | NA |
| Summed score for ICD† | 1.2±2.7 | 0 (0–16) | 39 (28.7) | 5 (3.7) |
| Total K-QUIP-RS score | 2.5±5.0 | 0 (0–28) | 47 (34.6) | NA |
*Cutoffs from the original American Version of the QUIP-RS: gambling, ≥6; hypersexuality, ≥8; buying, ≥8; eating, ≥7; hobbyism/punding, ≥7; and summed score for ICD, ≥10, †Summed score for ICD domains includes gambling, hypersexuality, buying, and eating.
DDS: dopamine dysregulation syndrome, ICD: impulse-control disorder, K-QUIP-RS: Korean Version of the Questionnaire for Impulsive-Compulsive Disorders in Parkinson's Disease Rating Scale, NA: not available.