Table 1.

Study Sample Characteristics (n = 48)

Variable	Range	Mean	SD
Notes: Values are unadjusted mean (SD).
Demographics
Age (years)	5 - 18	12.18	3.56
SES (Hollingshead Index)*	16 - 66	44.31	11.99
Neuropsychological Test
PPVT-III Raw Score	89 - 187	144.15	27.88
PPVT-III Standard Score	72 - 150	103.02	16.24
Visual Perception Raw Score	17 - 30	25.23	3.26
Visual Perception Standard Score	59 - 139	97.06	17.17
Volume (ml)
Total Cranial	860.42 - 1442.17	1105.99	131.35
Frontal Gray Matter	147.52 - 272.54	210.03	31.51
Left Frontal GM	74.30 - 132.84	105.47	15.46
Right Frontal GM	73.22 - 140.99	104.57	16.49
Parietal Gray Matter	100.90 - 201.59	141.87	21.81
Left Parietal GM	50.83 - 100.66	71.06	10.93
Right Parietal GM	50.07 - 100.93	70.82	11.21
Temporal Gray Matter	92.16 - 178.21	127.94	18.74
Left Temporal GM	47.10 - 88.88	64.86	9.39
Right Temporal GM	42.13 - 89.34	63.08	9.83
Occipital Gray Matter	42.82 - 103.92	71.38	12.01
Left Occipital GM	21.33 - 53.56	35.75	6.42
Right Occipital GM	21.49 - 50.37	35.63	5.84

^*n = 47