Conclusions : International differences in prescriber behaviour may influence , and in turn be influenced by , the conduct of clinical trials .
Objective : International differences are thought to exist in dosages used by clinicians treating mood disorders .
This study examined international dosage differences in antidepressant clinical trials , using a data base formed and maintained as a component of a Cochrane review of comparative clinical trials of fluoxetine .
Compliance with antidepressant medication in the treatment of major depressive disorder in primary care: a randomized comparison of fluoxetine and a tricyclic antidepressant.
OBJECTIVE Many cl aims have been made for superior compliance with selective serotonin reuptake inhibitors ( SSRIs ) compared with tricyclic antidepressants , but to date meta-analyses have not confirmed reduced dropouts in r and omized controlled trials . The authors used a r and omized study design to evaluate differential compliance with antidepressant medications in a primary care setting . METHOD A total of 152 patients treated in 10 primary care practice s in the United Kingdom were included in a r and omized , open-label , parallel-group study of fluoxetine and dothiepin at therapeutic doses for 12 weeks . Compliance was assessed by using pill count , patient question naires , and the Medication Event Monitoring System . RESULTS The level of compliance with fluoxetine was numerically higher than the level of compliance with dothiepin on all three primary outcome measures , although the differences were not significant . In a secondary analysis using data from the Medication Event Monitoring System , both a survival analysis for length of time without a gap in medicine taking and a derived compliance index showed a significant advantage to fluoxetine . Patients in the fluoxetine group reported superior response on the health transition scale of the 36-item Short-Form Health Survey Question naire and numerically greater improvement on the Hamilton Depression Rating Scale . In both treatment arms patients with a superior compliance index were more likely to have improved in Hamilton depression scale scores by the last study visit . CONCLUSIONS This study supports recent meta-analyses of SSRIs versus tricyclic antidepressants in finding no significant differences in crude indices of compliance between fluoxetine and dothiepin , despite marked differences in side effect profile and dose regimen . However , both a survival analysis and a new measure that takes account of prolonged periods of noncompliance distinguished between the treatments and was associated with improvement in both groups
Conclusions : International differences in prescriber behaviour may influence , and in turn be influenced by , the conduct of clinical trials .
Objective : International differences are thought to exist in dosages used by clinicians treating mood disorders .
This study examined international dosage differences in antidepressant clinical trials , using a data base formed and maintained as a component of a Cochrane review of comparative clinical trials of fluoxetine .