TABLE 4.

Etiologies by age of presentation

Age group, y	0–2	3–5	6–10	11–15	16–20
No. patients (%)	12 (5.6)	16 (7.4)	39 (18)	52 (24.2)	96 (44.7)
Male (%)	4 (33)	7 (43.7)	12 (30.8)	24 (42.6)	39 (40.6)
Most common etiologies, n (%)	Bilary, 4 (33.3)	Medication, 7 (44)	Idiopathic, 13 (33)	Biliary, 23 (44)	Biliary, 32 (33)
	Systemic, 3 (25)	Systemic, 4 (25)	Biliary, 10 (26)	Medication, 17 (33)	Idiopathic, 27 (28)
	Trauma, (3) 25	Trauma, (3) 18.8	Medication, (8) 21	Idiopathic, (7) 13	Medication, (21) 22
	Inborn error of metabolism, (2) 16.7	Biliary, 2 (12.5)	Viral, 7 (18)	Metabolic, 6 (12)	Systemic, 10 (10)
	Medication, (2) 16.7	Metabolic, 2 (12.5)	Trauma, 5 (13)	Trauma, 3 (6)	Trauma, 7 (7)
		Viral, 2 (12.5)		Systemic, 3 (6)	Viral, 6 (6)
		Idiopathic, 2 (12.5)