Table 5.

Sleep related variables observed in optimal sleepers and not optimal sleepers

	Not optimal sleepers (n = 1278)		Optimal sleepers (n = 752)
	N	%	N	%
Child
Male	627	49.1	400	53.2*
Normal weight	704	67.8	490	68.8
Firstborn	754	59.0	450	59.8
Only child	490	38.3	158	21.0*
Family
Mother’edu: high school or univ	964	75.4	606	80.6*
Mother employed	780	61.0	487	64.8*
Father’s edu: high school or univ	893	69.9	522	69.4
Father employed	1164	92.8	684	92.1
Sleep items
Follows NSF recommendations	872	68.2	508	67.6
Has TV in bedroom	523	41.1	287	38.3*
Display devices use before sleeping	783	61.5	506	67.3*
Reads before sleep	486	38.2	307	40.9*
Sleep problems during the 1st year	325	25.5	129	17.2*
Has used products to sleep in the past	151	11.8	51	6.8*
Drink & food items
-Drinks before sleep:
Nothing	848	66.8	609	81.5*
Milk	311	24.5	85	11.4*
Juice	84	6.6	34	4.6*
-Bottle use	218	17.2	41	5.5*
-Eats before sleep:
Nothing	1012	79.7	610	81.4
Fruit	53	4.2	21	2.8
Sweet	119	9.4	83	11.1
Salted	42	3.3	15	2.0
-Eats during night:
Nothing	1250	98.7	740	99.3
-Drinks during night:
Nothing	1178	92.7	743	99.3*
Milk	70	5.5	3	0.4*
Juice	17	1.3	2	0.3*

*p value < 0.05 respect to not optimal sleepers