TABLE 1.
Characteristics of participants in development, reliability, and validity cohorts
| Scale Development Cohort, n = 388 Mean (SD) | Reliability Cohort, n = 50 Mean (SD) | Validity Cohort, n = 68 Mean (SD) | |
|---|---|---|---|
| Age | 71.70 (9.90)a | 73.88 (8.11) | 74.19 (8.67) |
| Gender, % male | 50.6 | 76.0 | 78.0 |
| Disease duration, years | 3.17 (3.67) | 9.57 (5.64) | 7.90 (5.40) |
| Education, years | n/a | 14.80 (3.07) | 15.38 (2.82) |
| MDRS-2 total raw score | n/a | 127.58 (16.21) | 120.91 (19.67) |
| UPDRS, part III | n/a | 34.68 (15.07) | 34.40 (16.06) |
| KI Relationship, n = 357 (%) | |||
| Spouse | 202 (56.6) | ||
| Child | 105 (29.4) | ||
| Other | 50 (14.0) | ||
| KI rating of patient motor severity, n = 375 (%) | |||
| I | 55 (14.7) | ||
| II | 43 (11.5) | ||
| III | 174 (46.4) | ||
| IV | 68 (18.1) | ||
| V | 35 (9.3) | ||
| KI rating of patient cognitive severity, n = 369 (%) | |||
| None | 69 (18.7) | ||
| Mild | 139 (37.7) | ||
| Moderate | 124 (33.6) | ||
| Severe | 37 (10.0) | ||
| KI rating of patient depression, n = 388 (%) | |||
| None | 121 (32.2) | ||
| Mild | 102 (26.3) | ||
| Moderate | 123 (31.7) | ||
| Severe | 42 (10.8) | ||
| KI self-reported depression, n = 383 (%) | |||
| None | 160 (41.8) | ||
| Mild | 109 (28.5) | ||
| Moderate | 95 (24.8) | ||
| Severe | 19 (5.0) | ||
a
Overall, 149 patients in the scale development cohort who participated by Web survey did not have data available regarding date of birth/age. Age is reported for remaining 239 subjects.
n/a, not applicable.