Table 2.

Correlations with diary-based sleep variables

Variables	1d	2	3
1. Eveningness (CSM)	—
2. rCMRglu - brainstem - WAKE	.58***,†	—
3. rCMRglu - brainstem - REM	.70***,†	.79***,†	—
4. Sleep onset	.55**,†	.48*	.45*
5. Sleep offset	.63***,†	.77***,†	.58**,†
6. Sleep onset latencya	.39*	.41*	.45*
7. Wake after sleep onsetb	−.00	.03	.04
8. Sleep efficiencyc	−.18	−.18	−.21
9. Total sleep time	.23	.38	.19

^aLn-transformed;

^bSqrt-transformed;

^cReverse-scored and Ln-transformed

^dNote that the sign of correlations with the Composite Scale of Morningness are reversed to ease interpretation (positive values now indicate positive correlations with eveningness)

^***p < 0.001;

^**p < 0.01;

^*p < 0.05;

^†survived Bonferroni correction (p < 0.0025)