Table 1.

Characteristics of the Study Population

	Controls				Cases
Variable	N	Median	Min	Max	N	Median	Min	Max
Age (years)	533	61	28	83	529	66	30	85
BMI (kg/m2)	510	27	13	48	501	27	16	48
Lifetime water arsenic conc. (per 10 µg/L)	529	1.8	0.01	167	523	1.06	0.09	140
Gender (% women)	533	49			529	55
Smoking (% yes)	502	53			496	65
Country (N)	533				529
Hungary		242				160
Romania		156				158
Slovakia		135				211	′

BMI (body mass index), N = number of individuals.