Table 1.

Distribution of children by socioeconomic status.

Socioeconomic status	A1	12	2.50
	A2	24	5.01
	B1	57	11.89
	B2	51	10.64
	C1	113	23.59
	C2	117	24.42
	D	93	19.41
	E	12	2.50