. 2015 Mar 25;77(4):571–581. doi: 10.1002/ana.24367

Table 2.

Relationship between Neuropsychological Measures and PAD in TBI Patients

Cognitive Domain	Neuropsychological Test	No.	Mean	GM PAD, rho	p	WM PAD, rho	p
Processing speed	Trail Making Test A, s	90	29.59 (12.15)	0.338	0.001^a	0.379	<0.001^a
	Trail Making Test B, s	90	68.79 (39.79)	0.343	0.001^a	0.271	0.009^a
	Stroop color naming, s	90	34.47 (8.83)	0.279	0.007^a	0.281	0.006^a
	Stroop word reading, s	90	23.93 (5.49)	0.269	0.009^a	0.306	0.003^a
	Choice reaction task median reaction time, ms	66	478 (124)	0.331	0.005^a	0.243	0.047
Executive function	Trail Making Test B minus A, s	90	39.15 (32.51)	0.262	0.011^a	0.154	0.146
	Inhibition/switching, s	89	69.54 (22.18)	0.247	0.018^a	0.205	0.053
	Inhibition/switching minus baseline Stroop performance, s	89	37.24 (18.41)	0.213	0.043	0.168	0.115
	Letter fluency total	89	39.01 (12.73)	−0.271	0.009^a	−0.133	0.214
Intellectual ability	WASI similarities	90	37.04 (5.22)	−0.160	0.132	−0.136	0.200
	WASI matrix reasoning	88	26.34 (5.53)	−0.104	0.336	0.013	0.908
Memory	People Test immediate recall	90	22.94 (7.33)	−0.253	0.015^a	−0.254	0.014^a

Correlations with PAD score were conducted with variance accounting for chronological age partialed out, using the Spearman rank-order approach.

Denotes statistical significance after false discovery rate correction for multiple comparisons.

GM* gray matter; PAD * predicted age difference score; TBI * traumatic brain injury; WASI * Wechsler Abbreviated Scale for Intelligence; WM * white matter.