Meta-analysis of the dose-response relationship of SSRI in obsessive-compulsive disorder
Molecular psychiatry, 2010•nature.com
We sought to determine differences in efficacy and tolerability between different doses of
selective serotonin reuptake inhibitors in the treatment of obsessive-compulsive disorder
(OCD) using meta-analysis. We identified 9 studies involving 2268 subjects that were
randomized, double-blind placebo-controlled clinical trials that compared multiple, fixed-
doses of selective serotonin reuptake inhibitors (SSRIs) to each other and to placebo in the
treatment of adults with OCD. Change in Y-BOCS score, proportion of treatment responders …
selective serotonin reuptake inhibitors in the treatment of obsessive-compulsive disorder
(OCD) using meta-analysis. We identified 9 studies involving 2268 subjects that were
randomized, double-blind placebo-controlled clinical trials that compared multiple, fixed-
doses of selective serotonin reuptake inhibitors (SSRIs) to each other and to placebo in the
treatment of adults with OCD. Change in Y-BOCS score, proportion of treatment responders …
Abstract
We sought to determine differences in efficacy and tolerability between different doses of selective serotonin reuptake inhibitors in the treatment of obsessive-compulsive disorder (OCD) using meta-analysis. We identified 9 studies involving 2268 subjects that were randomized, double-blind placebo-controlled clinical trials that compared multiple, fixed-doses of selective serotonin reuptake inhibitors (SSRIs) to each other and to placebo in the treatment of adults with OCD. Change in Y-BOCS score, proportion of treatment responders, and dropouts (all-cause and due to side-effects) were determined for each included study. Weighted mean difference was used to examine mean change in Y-BOCS score. Pooled absolute risk difference was used to examine dichotomous outcomes. Meta-analysis was performed using a fixed effects model in RevMan 4.2. 8. We found that compared with either low or medium doses, higher doses of SSRIs were associated with improved treatment efficacy, using either Y-BOCS score or proportion of treatment responders as an outcome. Dose of SSRIs was not associated with the number of all-cause dropouts. Higher doses of SSRIs were associated with significantly higher proportion of dropouts due to side-effects. These results suggests that higher doses of SSRIs are associated with greater efficacy in the treatment of OCD. This SSRI efficacy pattern stands in contrast to other psychiatric disorders like Major Depressive Disorder. This greater treatment efficacy is somewhat counterbalanced by the greater side-effect burden with higher doses of SSRIs. At present, there are insufficient data to generalize these findings to children or adolescents with OCD.
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