Table 2

Mean scores at the five time points on test and parental ratings of hyperactivity

	Baseline			Pre-placebo			Post-placebo			Pre-active			Post-active
	n	Mean	SD	n	Mean	SD	n	Mean	SD	n	Mean	SD	n	Mean	SD
Testing
Aggregated hyperactivity (ATH)	277	0.00	0.53	277	−0.03	0.57	277	−0.03	0.56	277	0.01	0.54	277	−0.03	0.55
Impulsivity	277	0.00	0.68	276	−0.01	0.76	277	−0.02	0.78	277	0.03	0.78	277	0.00	0.80
Activity and inattention	277	0.00	0.76	277	0.05	0.77	277	−0.07	0.74	277	0.06	0.75	277	0.04	0.70
Parental rating
Aggregated hyperactivity (APHR)	275	0.00	0.76	277	0.52	1.15	277	0.14	1.80	276	0.71	1.25	277	−0.06	1.61
Activity	275	0.00	1.00	277	0.61	1.39	277	0.16	2.11	276	0.85	1.49	277	−0.11	1.99
Impulsivity	275	0.00	1.00	275	0.47	1.30	276	0.08	1.68	273	0.58	1.23	274	−0.02	1.53
Inattention	274	0.00	1.00	277	0.48	1.46	276	0.19	2.30	276	0.69	1.78	274	−0.03	2.05