Table 6.

Summary of significant linear and nonlinear effects

	BIA scores	SAT scores	Teacher-reported academic functioning	Teacher- reported externalizing	Teacher- reported internalizing	Mother- reported externalizing	Mother- reported internalizing
Sleep minutes			7. Linear	10. Linear			15. Linear
				11. Nonlinear
Sleep efficiency	1. Linear	4. Linear	8. Linear	12. Linear
	2. Nonlinear	5. Nonlinear x race	9. Nonlinear x race	13. Nonlinear
	3. Nonlinear x race
Sleep problems		6. Nonlinear			14. Nonlinear (trend)		16. Nonlinear
							17. Nonlinear x race

Sleep problems = sleep/wake problems; BIA = Brief Intellectual Ability; SAT = Stanford Achievement Test.