Table 3.
Pearson’s correlation matrix concerning all scores at the neuropsychological tests involved in the study (i.e., STAI-T, STAI-S, BDI-II, DSF, DSB, CBT).
| PSQI | STAI-S | STAI-T | BDI-II | CBT | DSF | DSB | ||
|---|---|---|---|---|---|---|---|---|
| Age | Pearson’s r | 0.343* | ||||||
| p-value | 0.011 | |||||||
| STAI-S | Pearson’s r | 0.335* | — | 0.637*** | ||||
| p-value | 0.023 | — | <0.001 | |||||
| STAI-T | Pearson’s r | 0.635*** | — | |||||
| p-value | <0.001 | — | ||||||
| BDI-II | Pearson’s r | 0.580*** | 0.695*** | 0.795*** | — | |||
| p-value | <0.001 | <0.001 | <0.001 | — | ||||
| CBT | Pearson’s r | −0.359** | −0.045 | −0.282 | −0.182 | — | 0.373** | 0.274 |
| p-value | 0.010 | 0.768 | 0.060 | 0.232 | — | 0.007 | 0.052 | |
| DSF | Pearson’s r | −0.144 | −0.057 | −0.181 | −0.259 | — | ||
| p-value | 0.312 | 0.712 | 0.233 | 0.086 | — | |||
| DSB | Pearson’s r | −0.128 | −0.114 | −0.172 | −0.174 | 0.459*** | — | |
| p-value | 0.370 | 0.454 | 0.259 | 0.252 | <0.001 | — |
Note: *p < 0.05; **p < 0.01; ***p < 0.001. PSQI, Pittsburgh Sleep Quality Index score; BDI-II, Beck Depression Inventory score; STAI-T, State-Trait Anxiety Inventory (trait anxiety score); STAI-S, State-Trait Anxiety Inventory (state anxiety score); DSF, Digit Span Forward score; DSB, Digit Span Backward score; CBT, Corsi Block-Tapping score.