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Use of effect size to determine optimal dose of duloxetine in major depressive disorder.

Abstract：

OBJECTIVE:At effective doses, patients with major depressive disorder (MDD) treated with duloxetine have been found to experience significant symptom improvement as measured by HAMD(17) total score. In addition, duloxetine-treated patients have significantly higher remission and response rates compared with placebo. The objective of this analysis is to determine the optimal dose of duloxetine in MDD. MATERIALS AND METHODS:Effect size for duloxetine 40mg, 60mg, 80mg, and 120mg per day were estimated using all 6 acute phase III clinical trials in patients with MDD. The tolerability of duloxetine 40mg, 60mg, 80mg, and 120mg were evaluated using pooled data from the 6 studies. The primary efficacy measure in all trials was the HAMD(17) total score, from which were determined the effect size for HAMD(17) change scores, response rates (50% reduction from baseline to endpoint), and remission rates (HAMD(17) total score < or =7). RESULTS:A total of 1619 randomized patients were included in these studies, of which 632 were treated with placebo; 177 with duloxetine 40mg/day; 251 with 60mg/day; 363 with 80mg/day; and 196 with 120mg/day. An evaluation of increments in effect size between doses consistently showed that the most notable gain in effect size for efficacy was the 40-60mg/day dosage range. All dosages from 60 to 120mg were effective. The tolerability assessment indicated duloxetine at 40-120mg/day is well tolerated. Furthermore, the initial doses of 40-80mg/day were found to have comparable tolerability. CONCLUSIONS:The effect size analyses demonstrate that duloxetine 40mg has minimum efficacy, and that duloxetine 60-120mg/day is effective in the treatment of patients with MDD. An initial dose less than 60mg/day might provide better tolerability for some patients diagnosed with MDD.

journal_name

J Psychiatr Res

journal_title

Journal of psychiatric research

authors

Pritchett YL,Marciniak MD,Corey-Lisle PK,Berzon RA,Desaiah D,Detke MJ

doi

10.1016/j.jpsychires.2006.06.013

subject

Has Abstract

pub_date

2007-04-01 00:00:00

pages

311-8

issue

3-4

eissn

0022-3956

issn

1879-1379

pii

S0022-3956(06)00127-0

journal_volume

pub_type

杂志文章,多中心研究,随机对照试验

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Use of effect size to determine optimal dose of duloxetine in major depressive disorder.