Table 4: Multivariate regression model performances. The table shows the error on the test set (Error), and the -statistics (-stat), and the value obtained with the different connectivity methods in the different sleep states. The results are reported as median (IQR), where IQR stands for InterQuartile Range over the 100 random splits of the dataset. The labels reported are TE = transfer entropy, GC = Granger causality, QS = quiet sleep, and NQS = nonquiet sleep.

Multivariate regression performances
Median (IQR) Error (weeks)-stat value

Simple filtering
 TE, QS2.54 (0.41)0.57 (0.07)11.64 (3.46)
 TE, NQS2.88 (0.39)0.40 (0.07)6.23 (1.72)
GC, QS 2.52 (0.37)0.52 (0.07)10.01 (2.64)
 GC, NQS2.79 (0.53)0.44 (0.07)7.20 (2.09)

CCA
 TE, QS2.23 (0.29)0.63 (0.06)12.90 (3.14)
 TE, NQS2.54 (0.51)0.57 (0.06)10.36 (2.66)
GC, QS 2.10 (0.38)0.67 (0.05)15.96 (3.64)
 GC, NQS2.35 (0.42)0.63 (0.04)13.38 (2.61)