Research Article
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 4
Mean (SD) VAS rating for each item response option.
| | Items | Level | N (%) | Mean (SD) VAS rating |
| | Sleep | 1 | 10 (18.9) | 71.1 (21.5) | | 2 | 20 (37.7) | 69.9 (17.4) | | 3 | 23 (43.4) | 61.9 (24.7) |
| | Fatigue | 1 | 12 (22.6) | 78.3 (15.7) | | 2 | 38 (71.7) | 66.5 (19.2) | | 3 | 3 (5.7) | 21.7 (10.4) |
| | Tremor | 1 | 11 (20.8) | 77.2 (13.5) | | 2 | 25 (47.2) | 67.8 (22.0) | | 3 | 17 (32.1) | 58.1 (23.0) |
| | Mood | 1 | 20 (37.7) | 81.1 (9.1) | | 2 | 28 (52.8) | 61.8 (20.2) | | 3 | 5 (9.4) | 36.2 (23.8) |
| | Walking | 1 | 23 (43.4) | 71.9 (20.3) | | 2 | 28 (52.8) | 62.3 (22.4) | | 3 | 2 (3.8) | 66.0 (22.6) |
| | Memory | 1 | 21 (39.6) | 73.0 (18.1) | | 2 | 25 (47.2) | 62.9 (23.2) | | 3 | 7 (13.2) | 61.0 (23.7) |
| | Dexterity | 1 | 19 (35.9) | 70.3 (19.2) | | 2 | 33 (62.3) | 64.1 (23.0) | | 3 | 1 (1.9) | 82.0 |
| | Urine control | 1 | 25 (47.2) | 65.7 (23.5) | | 2 | 22 (41.5) | 68.0 (21.0) | | 3 | 6 (11.3) | 65.3 (18.7) |
| | Concentration | 1 | 27 (50.9) | 74.8 (16.0) | | 2 | 24 (45.3) | 60.5 (22.4) | | 3 | 2 (3.8) | 30.0 (28.3) |
| | Speech | 1 | 34 (65.4) | 69.7 (20.0) | | 2 | 16 (30.8) | 60.5 (25.5) | | 3 | 2 (3.9) | 64.5 (20.5) |
| | Freezing | 1 | 35 (66.0) | 71.6 (14.8) | | 2 | 17 (32.1) | 58.2 (29.4) | | 3 | 1 (1.9) | 35.0 |
| | Swallowing | 1 | 41 (77.4) | 71.1 (20.2) | | 2 | 9 (17.0) | 48.0 (21.1) | | 3 | 3 (5.7) | 62.0 (15.1) |
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SD, standard deviation; N = number; VAS, visual analogue scale.
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