Table 2.

Hair mercury levels (µg/g) in the study population (n = 102) Sawré Muybu Indigenous Land, Pará, Amazon, Brazil, 2019.

Variables	Case 1	Case 2	Children Population (n = 100) Mean ± SD (Range) Median
Mercury (µg/g) a	11.8	9.1	7.0 ± 4.5 (1.4–23.9) 5.8 IQR = 4.0; 5.8 and 8.8
	Sawré Muybu b (n = 45)	Poxo Muybu (n = 38)	Sawré Aboy (n = 19)
Mercury (µg/g) c	5.9 ± 4.5 (1.6–22.1) 4.4 IQR = 3.2; 4.4 and 7.3	6.3 ± 2.5 (1.4–11.8) 6.4 IQR = 4.5; 6.4 and 7.9	10.9 ± 5.6 (2.6–23.9) 10.1 IQR = 6.1; 10.1 and 15.2

IQR: interquartile range. ^a Data were obtained from 102 children. ^b Data were obtained from 44 children. ^c Significant different between the three villages (Kruskal–Wallis = 17.9; p-value < 0.0001).