TABLE 4.

Neurocognitive Correlates of Novel Psychiatric Disorders (NPD) in the Interval 6–12 Months After Mild Traumatic Brain Injury (MTBI)

	NPD (N=17)	No NPD (N=43)	t	[df]	p	Effect Size
Estimate of pre-injury academic functioning (conducted after the injury)
W-J–R Letter-Word ID standard score	96.9 (22.5)	109.6 (16.7) N=42	2.38	[57]	0.021	0.64
Academic and neurocognitive correlates 12 months post-injury
Academic functioning
W-J–R Letter-Word ID standard score	96.2 (22.0)	109.5 (16.4)	2.57	[58]	0.013	0.69
Processing speed
WISC–III Processing Speed scale score	104.0 (19.5)	112.9 (17.9) N=42	1.68	[57]	0.099	0.48
Rapid Naming: z-score	0.067 (1.402)	0.614 (0.943)	2.18	[58]	0.033	0.46
Memory functioning
CVLT: Monday list: long-delay z-score	−0.21 (1.40)	0.69 (0.81)	3.09	[58]	0.003	0.79
N-back Letter Rhyme task hits	0.31 (0.27) N=16	0.51 (0.23) N=39	2.86	[53]	0.006	0.80
Language
CELF–3 Formulated Sentences scaled score	8.8 (3.1)	10.6 (2.9) N=42	2.07	[57]	0.043	0.60
Adaptive Functioning 12 months post-injury
Vineland ABC Standard Score	81.8 (13.5)	98.7 (16.2) N=42	3.80	[57]	0.000	1.13

Values are expressed as mean (standard deviation [SD]).

ABC: Adaptive Behavior Composite; CELF–3: Clinical Evaluation of Language Fundamentals, 3rd Edition; CVLT–C: California Verbal Learning Test, Children’s Version; NS: not significant; p: significance level; WISC–III: Wechsler Intelligence Scale for Children, 3rd Edition; W-J–R: Woodcock-Johnson–Revised.