Table 3.
The Student’s t-test values between PQ1 and PQ2 scores (means ± SD) and Pearson product moment correlational analyses between 1) PQ1 and XF, 2) XF and D∆ over 10 days of testing (days 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19)
| Test days | PQ1 AD | PQ1 DLB | PQ2 AD | PQ2 DLB | t-values AD | t-values DLB | R (1) AD | R (1) DLB | R (2) AD | R (2) DLB |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 11.9±4.8 | 10.6±4.9 | 4.0±1.9 | 10.3±4.5 | 8.25* | 0.24 | 0.802* | 0.919 | 0.905* | 0.455 |
| 3 | 10.5±4.3 | 10.2±4.5 | 4.1±2.3 | 10.0±4.4 | 7.11* | 0.17 | 0.785* | 0.877 | 0.669* | 0.099 |
| 5 | 9.9±5.1 | 9.4±4.7 | 4.8±3.0 | 9.0±4.5 | 4.71* | 0.27 | 0.603○ | 0.892 | 0.680* | 0.179 |
| 7 | 9.5±4.6 | 8.0±4.1 | 5.2±2.6 | 7.8±3.9 | 4.39* | 0.22 | 0.644○ | 0.824 | 0.755* | 0.192 |
| 9 | 11.8±3.1 | 8.9±3.4 | 5.7±2.1 | 8.7±3.4 | 9.04* | 0.29 | 0.732* | 0.861 | 0.588○ | 0.297 |
| 11 | 8.9±4.4 | 7.3±3.8 | 5.0±2.8 | 7.0±3.8 | 4.04* | 0.23 | 0.556▲ | 0.855 | 0.646○ | 0.081 |
| 13 | 9.3±4.3 | 7.4±4.1 | 5.5±2.7 | 7.1±4.1 | 4.08* | 0.24 | 0.688* | 0.846 | 0.542▲ | 0.197 |
| 15 | 8.9±4.4 | 7.6±4.2 | 5.1±2.9 | 7.5±4.2 | 3.93* | 0.03 | 0.498• | 0.918 | 0.643○ | 0.122 |
| 17 | 9.5±4.0 | 8.3±3.3 | 5.4±3.1 | 8.2±3.4 | 4.42* | 0.07 | 0.767* | 0.869 | 0.547▲ | −0.176 |
| 19 | 9.5±5.3 | 8.3±4.5 | 4.5±3.4 | 8.1±4.7 | 4.26* | 0.19 | 0.871* | 0.853 | 0.576○ | −0.142 |
Notes:
*
t-tests (df=54); P<0.0001;
•
P<0.005;
▲
P<0.002;
○
P<0.001.
Abbreviations: AD, Alzheimer’s disease; D∆, difference between the measures of PQ1 and PQ2; DLB, dementia Lewy bodies; PQ1, initial cognition test; PQ2, repeated cognition test; SD, standard deviation; XF, number of complete sentences/minutes reached for each patient.