Table 3 Difference in primary efficacy outcomes for methylphenidate and placebo on accuracy measures

Task	Measure	Methylphenidate (mean (SD))	Placebo (mean (SD))	p Value	Cohen’s d
SAT	CSAT errors	2.55 (2.87)	2.42 (2.92)	0.607	0.07
	CSAT misses	1.35 (2.49)	1.28 (3.11)	0.824	0.04
4CRT	DI Errors	0.27 (0.42)	0.31 (0.73)	0.867	0.08
SART	3 Errors	8.96 (5.98)	9.47 (6.20)	0.068	0.14
	Non-3 errors	6.25 (11.20)	7.29 (11.01)	0.349	0.18
LNS	Scaled score	9.74 (2.30)	9.81 (2.46)	0.670	0.07

4CRT, Four Choice Reaction Time Task; CSAT, Complex Selective Attention Task RT; DI, Dissimilar Incompatible RT; LNS, Letter Number Sequencing; RT, Reaction Time; SART, Sustained Attention to Response Task.