Table 1. Baseline characteristics of healthy controls, urolithiasis patients, children of control (CC) and children of urolithiasis (UC).

		Control	Urolithiasis	p-value	CC	UC	p-value
	N	40	28		33	45
Gender (%male)		52.50%	64.30%	0.171	45.50%	48.90%	0.764
Age (years)		44.6 + 9.2	46.1 + 9.8	0.52	20.2 + 7.5	19.1 + 7.9	0.547
Body mass index (kg/m2)		24.5 + 3.8	24.1 + 3.6	0.676	20.8 + 3.7	19.6 + 3.8	0.181