Abstract:
PURPOSE:We conducted a retrospective cohort study to compare medication use patterns of a long-acting extended-release methylphenidate (Osmotic Release Oral System [OROS(®)] methylphenidate, CONCERTA(®)) and Teva-methylphenidate (methylphenidate ER-C), a generic drug determined by the Canadian regulatory authority, Health Canada, to be bioequivalent to OROS(®) methylphenidate. METHODS:We established an OROS(®) methylphenidate-experienced and new-user population cohort to compare medication use patterns, including medication persistence, duration of therapy, and treatment-switching patterns. Multivariable log-binomial regression was used to adjust for confounders of the associations with persistence. FINDINGS:In the OROS(®) methylphenidate-experienced cohort (n = 21,940), OROS(®) methylphenidate was associated with a 70% higher rate of medication persistence at 12 months relative to methylphenidate ER-C (adjusted relative risk = 1.70; 95% CI, 1.64-1.77). In the new-user cohort (n = 20,410), OROS(®) methylphenidate had a 58% higher rate of medication persistence relative to methylphenidate ER-C (adjusted relative risk = 1.58; 95% CI, 1.51-1.65). Median duration of therapy was significantly longer in patients taking OROS(®) methylphenidate compared with those taking methylphenidate ER-C, and treatment-switching occurred significantly more frequently in patients taking methylphenidate ER-C compared with those taking OROS(®) methylphenidate. IMPLICATIONS:Significant differences were observed in how the medications were used by patients in the real-world setting. Because the data sources were administrative databases, it was not possible to control for all potentially important confounding variables. Although differences in medication persistence may not directly reflect differences in treatment efficacy, the findings are important because these products are used interchangeably in a number of Canadian provinces.
journal_name
Clin Therjournal_title
Clinical therapeuticsauthors
Park-Wyllie L,Van Stralen J,Almagor D,Dobson-Belaire W,Charland K,Smith A,Le Lorier Jdoi
10.1016/j.clinthera.2016.07.001subject
Has Abstractpub_date
2016-08-01 00:00:00pages
1789-802issue
8eissn
0149-2918issn
1879-114Xpii
S0149-2918(16)30443-Xjournal_volume
38pub_type
杂志文章abstract::Macrolide and beta-lactam antimicrobial agents are frequently used for the treatment of upper and lower respiratory tract infections and skin or skin structure infections. To evaluate the relative in vitro activity of these antimicrobial drugs against organisms commonly involved in these infections, we tested clarithr...
journal_title:Clinical therapeutics
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journal_title:Clinical therapeutics
pub_type: 杂志文章,多中心研究,随机对照试验
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abstract::Etodolac, aspirin, and placebo were evaluated for efficacy and safety in 18 patients with adult-onset, active rheumatoid arthritis. This was a 12-week, double-blind, parallel-group study divided into drug titration and maintenance periods and preceded by a washout period of up to two weeks. The mean daily maintenance ...
journal_title:Clinical therapeutics
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journal_title:Clinical therapeutics
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更新日期:2013-08-01 00:00:00
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章
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journal_title:Clinical therapeutics
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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更新日期:2004-04-01 00:00:00