Table 1.

Characteristics of the Andes and Chaco study groups.

	Andes			Chaco
Variable	n	Median	5/95 percentile	n	Median	5/95 percentile	p-value a
Age (years)	264	35	20 to 65	169	39	18 to 69	0.078
Sex	264		89% female	169		75% female	< 0.001
Height (cm)	264	153	144 to 167	127	158	148 to 174	< 0.001
Weight (kg)	264	59	45 to 84	127	63	43 to 92	0.023
BMI (kg/m2)	264	25	19 to 35	127	25	18 to 36	0.80
Parity	243	3	0 to 11			No data
Arsenic in urine (μg/L)	264	196	21 to 537	169	80	15 to 1637	< 0.001
iAs in urine (%)	264	11	4.3 to 23	169	17	5.6 to 34	< 0.001
MMA in urine (%)	264	7.9	4.0 to 14	169	10	3.0 to 22	< 0.001
DMA in urine (%)	264	81	66 to 91	169	71	49 to 86	< 0.001
mtDNAcnb	244	0.57	0.33 to 1.0	159	0.84	0.44 to 1.5	< 0.001
Telomere lengthb	208	0.43	0.30 to 0.58	159	1.10	0.73 to 1.7	< 0.001

^ap-value is derived from the Mann-Whitney U-test.

^bThe relative mtDNAcn/telomere length was the quotient of the quantity of mtDNAcn/telomere and HBB, and thus, it is an arbitrary value.