| MMSE | CDR | PSQI | |||
Pearson correlation | P value | Spearman’s correlation | P value | Pearson correlation | P value | |
SE | 0.049 | 0.837 | 0.170 | 0.473 | −0.030 | 0.901 |
SL | −0.115 | 0.628 | −0.049 | 0.839 | 0.193 | 0.415 |
SWS | 0.135 | 0.570 | 0.328 | 0.158 | −0.227 | 0.336 |
Arousal index | 0.147 | 0.536 | −0.183 | 0.440 | 0.120 | 0.613 |