. 2021 Nov 23;11:22729. doi: 10.1038/s41598-021-02163-9

Table 4.

Association between area of residence and heavy metal concentration.

Metal (mg/Kg)	Residence area	N	Average concentration (mg/kg)	T-student p-value
Al	Carhuamayo	16	22.3125	0.025
Al	Paragsha	76	30.2171	0.025
Sb	Carhuamayo	16	0.0498	< 0.001
Sb	Paragsha	76	0.1156	< 0.001
As	Carhuamayo	16	0.1762	< 0.001
As	Paragsha	76	0.4676	< 0.001
Cd	Carhuamayo	16	0.0416	0.001
Cd	Paragsha	76	0.0988	0.001
Cr	Carhuamayo	16	0.3931	< 0.001
Cr	Paragsha	76	0.8303	< 0.001
Fe	Carhuamayo	16	29.8157	< 0.001
Fe	Paragsha	76	55.1053	< 0.001
Pb	Carhuamayo	16	0.8100	< 0.001
Pb	Paragsha	76	4.6247	< 0.001
Sn	Carhuamayo	16	0.1139	< 0.001
Sn	Paragsha	76	41.9969	< 0.001
Tl	Carhuamayo	16	0.0051	< 0.001
Tl	Paragsha	76	0.192	< 0.001

Carhuamayo: region unexposed to the mine; Paragsha: region exposed to the mine.

N number of children.