		4-year	4.5-year	5-year	5.5-year	6-year	6.5-year	Total
Barefoot group	Boys	61	42	50	50	60	36	299
	Girls	54	39	55	27	46	32	253
	Sum	115	81	105	77	106	68	552
Non-barefoot group	Boys	39	50	39	53	54	51	286
	Girls	34	50	51	42	38	37	252
	Sum	73	100	90	95	92	88	538