Table 6.

Univariate analysis of academic grades with Children’s Sleep Habits Questionnaire subscales.

CSHQ Variable	Regression Coefficient	P
Bedtime resistance	–0.233	< .001
Sleep onset delay	0.045	.210
Sleep duration	0.023	.528
Sleep anxiety	–0.235	< .001
Night wakening	–0.279	< .001
Parasomnias	–0.265	< .001
Sleep-disordered breathing	–0.394	< .001
Daytime sleepiness	–0.400	.260

CSHQ = Children’s Sleep Habits Questionnaire.