Table 2.

Age at onset and G-CSF treatment

	Congenital			Cyclic		Autoimmune/Idiopathic
Age, yr	<18		≥18	<18	≥18	<18	≥18
Age at presentation, yr	Median	0.2	0.4	0.5	4.1	1.1	25.0
	Mean	0.9	3.4	1.2	12.6	1.9	27.8
	Range	(0-15.2)	(0-69.6)	(0-10.3)	(0-74.6)	(0-15.6)	(0-86.9)
Age at diagnosis, yr	Median	0.5	1.1	1.3	11.1	1.4	28.7
	Mean	1.2	4.9	2.2	16.6	2.3	30.8
	Range	(0-14.5)	(0-69.7)	(0-11.5)	(0-74.6)	(0-15.9)	(0-87.0)
Age at start of G-CSF treatment, yr	Median	0.9	7.4	1.6	21.4	1.7	33.3
	Mean	2.2	11.1	2.6	24.4	2.8	35.1
	Range	(0-15.2)	(0-74.3)	(0.03-10.8)	(0.1-74.6)	(0.02-16.1)	(0.1-87.5)
Age at enrollment, yr	Median	2.3	12.8	2.4	25.7	2.2	35.7
	Mean	3.7	15.4	3.5	28.1	3.5	36.8
	Range	(0.1-17.7)	(0.2-74.5)	(0.4-14.6)	(1.1-75.4)	(0.4-16.7)	(1.0-87.5)