Table 2.

Mean raw and z-scores for cognitive tests

	PPTH (n = 57)		Migraine (n = 39)		HC (n = 39)		Migraine vs. PPTH p-value	PPTH vs. HC p-value	Migraine vs. HC p-value
	Mean (SD)	z-score	Mean (SD)	z-score	Mean (SD)	z-score
TMT A	27.6 (9.4)	0.18	27.7 (11.0)	0.13	23.1 (5.1)	0.59	0.973	0.126	0.115
TMT B	69.5 (26.7)	0.16	65.7 (29.6)	0.35	58.1(21.1)	0.52	0.585	0.153	0.702
Immediate recall	5.5 (2.1)	−1.22	6.3 (1.6)	−0.67	6.4 (1.4)	−0.69	0.087	0.109	0.995
Delayed recall	8.9 (4.2)	−1.01	10.2 (3.0)	−0.32	10.4 (2.9)	−0.34	0.065	0.075	0.998

Results of Tukey HSD performed on z-scores. SD Standard deviation, PPTH Persistent post-traumatic headache, HC Healthy controls, TMT Trail making test