Table 6. Distribution of the AGA, IUGR and SGA cases among the different categories of fetal Hg exposure.

Hg: mercury; AGA: appropriate for gestational age; IUGR: intrauterine growth restriction; SGA: small for gestational age; %: percentage of the identified cases; cat: category.

		Small Fetuses
Categories of fetal Hg exposure	AGA Group	IUGR Group	SGA Group	Total of Cat
Cat 1	31	11	2	44
% of the Group	32.3%	22.4%	6%
% of the Total	17.4%	6.1%	1.1%	24.7%
Cat 2	19	15	13	46
% of the Group	19.8%	30.6%	36.4%
% of the Total	10.7%	8.4%	6.7%	25.8%
Cat 3	25	13	8	46
% of the Group	26%	26.5%	24.2%
% of the Total	14%	7.3%	4.5%	25.8%
Cat 4	21	10	11	42
% of the Group	21.8%	20.4%	33.3%
% of the Total	11.8%	5.6%	6.1%	23.6%
Total	96	49	33	178