Table 4. Coefficients for the correlations between the K-QUIP-RS score and clinical variables.
| Variable | Summed score for ICD | Total QUIP-RS score |
|---|---|---|
| Age | -0.063 | -0.160 |
| Disease duration | 0.044 | 0.077 |
| Total LED | 0.134 | 0.209* |
| Agonist LED | 0.117 | 0.181* |
| H&Y stage | 0.091 | 0.121 |
| UPDRS part I | 0.091 | 0.200* |
| Intellectual impairment | 0.114 | 0.133 |
| Thought disorder | 0.078 | 0.105 |
| Depression | 0.026 | 0.176* |
| Motivation/initiative | 0.152 | 0.239† |
| UPDRS part II | 0.114 | 0.214* |
| UPDRS part III | 0.058 | 0.084 |
| K-MMSE score | -0.133 | -0.132 |
| MoCA-K score | -0.028 | -0.044 |
| K-MADS score | 0.230** | 0.224† |
| K-PDQ39 summary index | 0.171* | 0.223† |
| Mobility | 0.110 | 0.160 |
| Activities of daily living | 0.139 | 0.171* |
| Emotional well-being | 0.145 | 0.213* |
| Stigma | 0.040 | 0.122 |
| Social support | 0.170* | 0.219* |
| Cognition | 0.259* | 0.273† |
| Communication | 0.238** | 0.264† |
| Bodily discomfort | 0.231** | 0.302† |
| K-RBDQ score | 0.216* | 0.220* |
Summed score for ICD domains includes gambling, hypersexuality, buying, and eating. Spearman's rank correlation test: *p<0.05, †p<0.01. H&Y: Hoehn and Yahr, ICD: impulse-control disorder, K-MADS: Korean Version of the Montgomery-Asberg Depression Scale, K-MMSE: Korean Version of the Mini Mental State Examination, K-PDQ39: Korean Version of the Parkinson's Disease Quality of Life-39, K-QUIP-RS: Korean Version of the Questionnaire for Impulsive-Compulsive Disorders in Parkinson's Disease Rating Scale, K-RBDQ: Korean Version of the Rapid-Eye-Movement Sleep-Behavior-Disorders Screening Questionnaire, LED: levodopa equivalent dose, UPDRS: Unified Parkinson's Disease Rating Scale.