Table 3.

Executive function test results

		Patients without the C9orf72 repeat expansion	Patients with the C9orf72 repeat expansion	p value
Category fluency*		16·5 (7·9; 126)	15·1 (7·9; 14)	0·100
Combined verbal fluency index†		13·8 (7·7–27·0; 149)	17·8 (11·3–48·7; 19)	0·056
Brixton scaled score*		5·1 (2·3; 154)	4·6 (2·8; 19)	0·043
Stroop score
	CW score*	69·3 (33·3; 119)	60·3 (32·5; 14)	0·067
	SEF score†	37·1 (25·9; 119)	44·5 (25·6; 14)	0·054
Backward digit span*		10·6 (3·5; 117)	9·7 (3·7; 12)	0·221

Data are mean (SD; number of patients) or median (IQR; number of patients). CW=Colour-Word score for the Stroop test. SEF=Stroop Executive Factor.

^*Low score is worse.

^†High score is worse.