Table 1.
Demographic and clinical characteristics of the sample (N = 52).
| Implementation | Verbal | Effect | ||
|---|---|---|---|---|
| Variable | Intentions | Rehearsal | Statistics | size* |
| (n = 25) | (n = 27) | |||
| Male/female ratio | 12/13 | 13/14 | χ2<0.01, p=0.99 | −0.001 |
| Age (years) | 63.8 (4.6) | 62.7 (5.5) | t=0.78, p=0.44 | 0.22 |
| Education (years) | 16.4 (2.6) | 16.0 (2.3) | t=0.64, p=0.52 | 0.16 |
| Race | χ2=2.28, p=0.32 | 0.21 | ||
| White | 23 | 24 | ||
| Other | 2 | 3 | ||
| Age at diagnosis (years) | 60.2 (5.4) | 58.7 (6.1) | t=0.91, p=0.37 | 0.26 |
| Duration of diagnosis (years) | 4.2 (3.6) | 5.0 (3.0) | t=0.83, p=0.41 | −0.24 |
| Primary motor sign | χ2=1.65, p=0.44 | 0.18 | ||
| Tremor | 16 | 15 | ||
| Bradykinesia/rigidity | 6 | 5 | ||
| Mixed | 3 | 7 | ||
| Hoehn & Yahr Stage | χ2=2.49, p=0.47 | 0.22 | ||
| 1 | 2 | 3 | ||
| 2 | 18 | 21 | ||
| 2.5 | 4 | 1 | ||
| 3 | 1 | 2 | ||
| UPDRS (on medications) | 17.2 (10.0) | 15.3 (6.9) | t=0.79, p=0.43 | 0.22 |
| BDI-II | 11.0 (8.3) | 10.4 (5.3) | t=0.32, p=0.75 | 0.09 |
| MoCA | 26.9 (1.8) | 26.4 (2.0) | t=0.95, p=0.35 | 0.26 |
Note. Numbers represent means (standard deviation) or number of participants. UPDRS = Unified Parkinson’s Disease Rating Scale, Motor subscale; BDI-II = Beck Depression Inventory, Second Edition; MoCA = Montreal Cognitive Assessment.
*
Phi (r) for χ2 tests or Cohen’s d for t-tests.