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- Title
Individual change in methylphenidate use in a national sample of children aged 2 to 11 years.
- Authors
Romano, Elisa; Baillargeon, Raymond H.; Fortier, Isabel; Hong-Xing Wu; Robaey, Philippe; Zoccolillo, Mark; Tremblay, Richard E.; Wu, Hong-Xing
- Abstract
<bold>Objectives: </bold>To determine methylphenidate use in children aged 2 to 13 years. To provide age- and sex-specific estimates of methylphenidate initiation and cessation during a 2-year period.<bold>Method: </bold>Data from 2 cycles of a Canadian household survey yielded a sample of over 10 000 children aged 2 to 11 years at Cycle 1 who continued to participate at Cycle 2. We used logit modelling to estimate Cycle 2 methylphenidate use, methylphenidate use over a 2-year period, and methylphenidate initiation and cessation from Cycles 1 to 2.<bold>Results: </bold>In 1996 and 1997, methylphenidate use ranged from 0.32% to 6.31% among children aged 4 to 13 years. School-aged boys were more likely than girls to use methylphenidate. Odds were greater for boys aged 6 to 7 years than for boys aged 4 to 5 years; they were also greater for boys aged 10 to 11 years than for boys aged 12 to 13 years. Almost 1% of children used methylphenidate at both data cycles. Odds of Cycle 2 methylphenidate use were 135 times greater for children using methylphenidate at Cycle 1, compared with nonusers. Methylphenidate initiation ranged from 0.20% to 3.34%, and school-aged boys had higher initiation rates than girls. Cessation rates ranged from 18% to78%, and there were no statistically significant differences by age and sex.<bold>Conclusions: </bold>Methylphenidate prevalence findings are consistent with past studies. We found an age-by-sex interaction on methylphenidate use. We also found both continuity and discontinuity in methylphenidate use.
- Subjects
CANADA; METHYLPHENIDATE; CHILD psychopathology; DRUG therapy; PHARMACODYNAMICS; STIMULANTS; CHILD psychology; MENTAL health; PSYCHIATRIC diagnosis; DRUG utilization statistics; AGE distribution; ATTENTION-deficit hyperactivity disorder; COMPARATIVE studies; DOSE-effect relationship in pharmacology; LONGITUDINAL method; RESEARCH methodology; MEDICAL cooperation; RESEARCH; SEX distribution; SURVEYS; LOGISTIC regression analysis; EVALUATION research; CENTRAL nervous system stimulants
- Publication
Canadian Journal of Psychiatry, 2005, Vol 50, Issue 3, p144
- ISSN
0706-7437
- Publication type
journal article
- DOI
10.1177/070674370505000303