Table 1.

Data on sex and ear side of examined ears at the age of 45 months.

	Children	% of children	Boys	% of ears	% of boys	Girls	% of ears	% of girls
Both ears	193	55%	88	45.60%	52.40%	105	54.40%	57.40%
Left ear only	93	26.50%	47	50.50%	28%	46	49.50%	25.10%
Right ear only	65	18.50%	33	50.80%	19.60%	32	49.20%	17.50%
Sum	351		168	47.90%		183	52.10%