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. 2024 Apr 25;11:20543581241238808. doi: 10.1177/20543581241238808

Table 1.

Unidimensional Patient-Reported Outcome Tools Used in the Assessment of CKD-Associated Pruritus Severity.

PRO TOOL SYMPTOM RECALL STRENGTHS LIMITATIONS
WI-NRS 24 graphic file with name 10.1177_20543581241238808-img2.jpg Worst itch in the previous 24 hours Simple and fast
Validated to analyze itch severity		 Not multidimensional, only measures severity
VAS24,25 Inline graphic
Inline graphic 		Worst itch in the previous 24 hours Simple and fast
Validated to analyze itch severity		 Not multidimensional, only measures severity
VRS 24
Q-20 KDQOL-361,20 graphic file with name 10.1177_20543581241238808-img5.jpg Evaluation of the last 4 weeks Inclusion in KDQOL-36, used in large studies Not validated as a severity measure

CKD = chronic kidney disease; KDQOL = Kidney Disease Quality of Life Instrument; PRO = patient-reported outcome; VAS = Visual Analogue Scale; VRS = Verbal Rating Scale; WI-NRS = Worst Itch Numerical Rating Scale.