Variables	Low birth weight	Head circumference	Baby Weight (g)	Birth length	Lead_m	Cadmium_m	Manganese_m	Zinc_m	Aluminum_m	Copper_m
Low birth weight	1	0.1324	0.1831	0.2568	-0.0496	-0.2997	0.0646	-0.3442	-0.3628	0.3407
Head circumference	0.1324	1	0.2428	0.2776	-0.0984	0.0011	0.1480	0.0072	-0.1977	0.1513
Baby Weight (g)	0.1831	0.2428	1	0.7467	-0.1646	-0.0843	0.0018	-0.1836	-0.6081	-0.0499
Birth length	0.2568	0.2776	0.7467	1	-0.2689	-0.2047	-0.1047	-0.2048	-0.6107	0.1425
Lead_m	-0.0496	-0.0984	-0.1646	-0.2689	1	0.2167	0.2766	-0.2452	0.1833	-0.2535
Cadmium_m	-0.2997	0.0011	-0.0843	-0.2047	0.2167	1	0.0901	0.2684	0.3525	-0.0377
Manganese_m	0.0646	0.1480	0.0018	-0.1047	0.2766	0.0901	1	0.0055	-0.0295	0.0119
Zinc_m	-0.3442	0.0072	-0.1836	-0.2048	-0.2452	0.2684	0.0055	1	0.3191	0.1179
Aluminum_m	-0.3628	-0.1977	-0.6081	-0.6107	0.1833	0.3525	-0.0295	0.3191	1	0.2116
Copper_m	0.3407	0.1513	-0.0499	0.1425	-0.2535	-0.0377	0.0119	0.1179	0.2116	1