Table 3. Test–retest reliability of the K-QUIP-RS and coefficients for the correlations between the various domains and the total K-QUIP-RS score.

K-QUIP-RS domain	Guttman split-half coefficient	Spearman's rank correlation
		rS	p
Gambling	0.908	0.392	<0.001
Hypersexuality	0.079	0.539	<0.001
Buying	0.863	0.551	<0.001
Eating	0.708	0.723	<0.001
Hobbyism/punding	0.830	0.820	<0.001
DDS	0.347	0.379	<0.001
Summed score for ICD	0.726	0.887	<0.001
Total K-QUIP-RS score	0.808	-	-

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 ImpulsiveCompulsive Disorders in Parkinson's Disease Rating Scale, rS: Spearman's rank correlation coefficient.