Table 2.

Correlations among variables.

Variables	(1)	(2)	(3)	(4)	(5)
(1) Age	1
(2) Sex	0.02	1
(3) Sleep quality	−0.08***	0.03	1
(4) Executive function	−0.10***	−0.03	0.45***	1
(5) Creativity	−0.15***	−0.03	−0.08***	−0.10***	1

^***P < 0.01.