Table 1.

Age, gender and parents' educational level according to public and private schools.

	Municipal public school			State public school			Private school			Total			p-value
	n		%	n	%	n		%	n		%
Age	146		30.6	239		50.1	92		19.3	477		100	0.0636
Mean (years old)		8.5			8.2			8.2			8.3
Standard-Deviation		1.3			1.1			1.2			1.2
Gender													0.049
Female	77		52.7	105		56.1	34		37.0	216		45.3
Male	69		47.3	134		43.9	58		63.0	261		54.7
Total	146		100	239		100	92		100	477		100
Parents' educational levels													< 0.0001
Missing data	21
Elementary uncompleted	56		56	40		40	4		4	100		24.8
Elementary completed	22		50	21		47.7	1		2.3	44		10.9
High-School	55		34.2	99		61.5	7		4.3	161		40.0
Bachelor and graduation	8		8.2	20		20.4	70		71.4	98		24.3

Chi-SquareTest.