Table 1.

Description of the cognitive outcomes in children [median (25th–75th %)]

Visit	n	Age (mean), y	Working memory (WM) (two-back numbers), d′*	Superior WM (three-back numbers), d′*	Inattentiveness (ANT HRT-SE)†, ms
First visit	2,278	8.5	206 (129, 360)	112 (53, 171)	271 (205, 338)
Second visit	2,425	8.7	221 (129, 392)	112 (59, 190)	250 (186, 321)
Third visit	2,347	9.1	234 (129, 392)	128 (59, 190)	247 (183, 317)
Fourth visit	2,307	9.4	253 (152, 392)	129 (64, 210)	228 (165, 294)

^*The n-back d′ is a measure of detection subtracting the normalized false alarm rate from the hit rate [(Z hit rate − Z false alarm rate) × 100].

^†Hit reaction time SE (HRT-SE), SE of reaction time for correct responses as a measure of response speed consistency throughout the test.