Table 4. Associations Between ADHD Medication Use and SweSAT Scores^a.

Patients	Estimate (95% CI)
	6 mo as Cutoff	P Value	3 mo as Cutoff	P Value	<3 mo as ON, >6 mo as OFF	P Value
Male	4.80 (1.61 to 7.98)	.003	4.05 (0.90 to 7.19)	.01	4.83 (1.28 to 8.39)	.007
Female	2.46 (−1.41 to 6.33)	.21	2.95 (−0.30 to 6.21)	.08	3.00 (−1.06 to 7.05)	.15
Overall	3.72 (1.26 to 6.19)	.003	3.56 (1.28 to 5.84)	.002	4.02 (1.34 to 6.69)	.003

Abbreviations: ADHD, attention-deficit/hyperactivity disorder; SweSAT, Swedish Scholastic Aptitude Test.

^aDays from last dispense were used to define medication status at test date. Estimates of medication effect (ie, estimated mean difference in the test scores when participants were medicated [ON] compared with not medicated [OFF]) were from the within-patient analysis and adjusted for both linear and quadratic effects of age and the number of previous tests. The number of patients and tests were the same as presented in Table 3 (within-patient level).