Table 3. Group Comparisons on Consent Standards (S).
| Measures | Range | Controls,
n = 22 |
PD-CIND
n = 16 |
PDD
n = 16 |
F | p† | post hoc |
|---|---|---|---|---|---|---|---|
| S1, expressing choice | 0-4 | 3.8 (0.4) | 3.8 (0.4) | 3.7 (0.6) | .43 | .66 | ---- |
| [S2], reasonable choice, n (%) | 0-1 | ||||||
| Yes | 22 (100) | 16 (100) | 16 (100) | ---- | |||
| No | 0 (0.0) | 0 (0.0) | 0 (0.0) | ||||
| S3, appreciation | 0-8 | 7.6 (0.8) | 7.0 (1.2) | 6.3 (2.0) | 4.3 | .02 | C, PD-CIND > PDD |
| S4, reasoning | 0-12 | 9.0 (2.8) | 7.9 (2.8) | 5.6 (3.1) | 6.4 | .003 | C, PD-CIND > PDD |
| S5, understanding | 0-78 | 61.9 (9.5) | 52.9 (10.6) | 37.6 (12.7) | 15.2 | .001 | C > PD-CIND > PDD |
Except for [S2], all values are mean (SD).
†
p value for omnibus test of group differences.
PD-CIND = Parkinson's disease with cognitive impairment but no dementia
PDD = Parkinson's disease dementia
C, PD-CIND > PDD = control and PD-CIND means are greater than PDD mean
C > PDD = control mean greater than PDD mean, and PD-CIND mean is not different than either control or PDD mean
C > PD-CIND > PDD = control mean greater than PD-CIND mean which in turn is greater than PDD mean