Table IV.

Participant Characteristics: Age, Sex, OFC Percentile, Height Percentile, MRI Findings from Medical Records, and History of Seizures

#	Age	Sex	OFC%	Ht%	MRI Findings			Seizures
					Overall	Ventricles	Other
64	1.25	f	98	45	abnormal	enlarged	white matter intensities, thin corpus callosum, prominent perivascular spaces	no
52	1.5	f	40	50	abnormal		white matter lesions	no
41	2.0	f	50	25	NA			no
59	2.2	f	50	3	abnormal		mild volume loss, delayed myelination	no
2	2.5	m	50	35	normal			no
3	2.8	f	>98	5	normal			no
6	4.1	f	>98	90	abnormal	enlarged	increased signal white matter	no
53	4.3	m	50	75	abnormal		volume loss on right (postoperative stroke)	yes
7	4.3	m	>98	25	abnormal	enlarged	prominent sulci, thin corpus callosum	no
8	4.3	m	>98	55	abnormal	communicating hydrocephalus		no
42	4.3	f	5	15	NA			no
10	4.7	m	>98	90	abnormal		subcortical hyperintensities frontal lobe	no
11	4.9	f	95	90	NA			no
14	5.7	f	>98	50	normal			no
16	6.4	m	>98	60	abnormal		optic nerve tortuosity, arachnoid cyst	yes
18	6.9	f	60	90	abnormal	enlarged	posterior fossa cyst	no
19	7.1	m	>98	75	NA			no
47	7.3	m	50	50	abnormal	enlarged	delayed myelinization	no
20	8.8	m	15	50	normal			yes
21	8.8	m	2	25	NA			no
48	9.0	f	50	10	NA			no
57	9.8	f	>98	95	NA			no
24	9.9	f	50	30	NA			no
25	10.0	m	50	65	abnormal	hydrocephalusa		no
45	10.3	m	20	<3	NA			no
61	10.5	m	90	95	NA			no
50	10.9	m	>98	<3	abnormal		small pituitary	no
28	11.6	m	90	50	abnormal		decreased white matter volume, thin corpus callosum	no
62	13.3	f	>98	50	NA			yes
31	13.9	m	90	75	NA			no
32	13.9	m	>98	75	abnormal		prominent perivascular spaces	no
33	14.8	f	40	3	abnormal	enlarged		no
34	15.3	f	95	5	normal			no
35	15.3	f	95	75	NA			no
38	18.2	m	95	80	NA			no
36	18.9	f	<2	<3	NA			yes
37	21.3	f	>98	95	normal			no

Abbreviations: OFC% = head circumference percentile; Ht% = height percentile; NA = Not applicable (no MRI performed).

^aHydrocephalus due to overproduction of cerebral spinal fluid, treated with a ventricular-atrial shunt.