Table 2:

Patterns of childhood prescriptions of medications for attention-deficit/hyperactivity disorder among children of 16 358 pregnancies admitted for delivery between 31 + 0 and 36 + 6 weeks’ gestation in British Columbia, Canada, 2000–2013

CharacteristicNo. (%) of pregnancies*
n = 16 358
≥ 1 prescription892 (5.5)
Age at first prescription, yr, median (IQR)†8 (6–10)
≥ 1 prescription among children aged ≥ 13 yr‡449 (8.2)
No. of dispensations, median (IQR)†11 (4–31)
Estimated total number of d of treatment (total d supplied for all medications, per child), median (IQR)†362 (118–1041)
Type of medication, no. (%) of total dispensations
 Methylphenidate hydrochloride12 069 (63.9)
 Atomoxetine hydrochloride1936 (10.3)
 Dextroamphetamine sulfate1717 (9.1)
 Dextroamphetamine-amphetamine939 (5.0)
 Lisdexamfetamine dimesylate2223 (11.8)
Total dispensations18 884

  • Note: IQR = interquartile range.

  • ↵* Unless indicated otherwise.

  • ↵† Among 892 children with at least 1 prescription.

  • ↵‡ Among 5458 children with 13 or more years of follow-up.