Item Selection for a New Health-Related Quality of Life Measure for Parkinson’s Disease: The Preference-Based Parkinson’s Disease Index (PB-PDI)

Table 3

Items ranked from highest to lowest mean impact score for the whole sample, as well as by sex and years since PD diagnosis.

>5 years (n = 32)		≤5 years (n = 21)
Item	Mean impact score	Item	Mean impact score
Sleep	3.6	Sleep	3.3
Fatigue	3.3	Tremor	3.1
Tremor	3.2	Fatigue	3.1
Walking	2.7	Mood	2.5
Mood	2.6	Memory	2.2
Memory	2.5	Dexterity	2.2
Concentration	2.5	Walking	2.1
Dexterity	2.3	Urine control	1.8
Urine control	2.3	Speech	1.4
Freezing	1.8	Swallowing	1.3
Speech	1.4	Concentration	1.1
Swallowing	0.6	Freezing	1.1