{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T17:41:40Z","timestamp":1792086100557,"version":"4.4.0"},"reference-count":116,"publisher":"American Medical Association (AMA)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JAMA Psychiatry"],"published-print":{"date-parts":[[2020,6,1]]},"abstract":"<jats:sec id=\"ab-yoi190103-4\">\n                    <jats:title>Importance<\/jats:title>\n                    <jats:p>Antidepressants are commonly used worldwide to treat major depressive disorder. Symptomatic response to antidepressants can vary depending on differences between individuals; however, this variability may reflect nonspecific or random factors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-yoi190103-5\">\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To investigate the assumption of systematic variability in symptomatic response to antidepressants and to assess whether this variability is associated with severity of major depressive disorder, antidepressant class, or year of study publication.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-yoi190103-6\">\n                    <jats:title>Data Sources<\/jats:title>\n                    <jats:p>Data used were from a recent network meta-analysis of acute treatment with licensed antidepressants in adults with major depressive disorder. The following databases were searched from inception to January 8, 2016: the Cochrane Central Register of Controlled Trials, CINAHL, Embase, LILACS database, MEDLINE, MEDLINE In-Process, and PsycINFO. Additional sources were international trial registries, drug approval agency websites, and key scientific journals.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-yoi190103-7\">\n                    <jats:title>Study Selection<\/jats:title>\n                    <jats:p>Analysis was restricted to double-blind, randomized placebo-controlled trials with available data at the study\u2019s end point.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-yoi190103-8\">\n                    <jats:title>Data Extraction and Synthesis<\/jats:title>\n                    <jats:p>Baseline and end point means, SDs, number of participants in each group, antidepressant class, and publication year were extracted. The data were analyzed between August 14 and November 18, 2019.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-yoi190103-9\">\n                    <jats:title>Main Outcomes and Measures<\/jats:title>\n                    <jats:p>With the use of validated methods, coefficients of variation were derived for antidepressants and placebo, and their ratios were calculated to compare outcome variability between antidepressant and placebo. Ratios were entered into a random-effects model, with the expectation that response to antidepressants would be more variable than response to placebo. Analysis was repeated after stratifying by baseline severity of depression, antidepressant class (selective serotonin reuptake inhibitors: citalopram, escitalopram, fluoxetine, fluvoxamine, paroxetine, sertraline, and vilazodone; serotonin and norepinephrine reuptake inhibitors: desvenlafaxine and venlafaxine; norepinephrine-dopamine reuptake inhibitor: bupropion; noradrenergic agents: amitriptyline and reboxetine; and other antidepressants: agomelatine, mirtazapine, and trazodone), and publication year.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-yoi190103-10\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      In the 87 eligible randomized placebo-controlled trials (17\u202f540 unique participants), there was significantly more variability in response to antidepressants than to placebo (coefficients of variation ratio, 1.14; 95% CI, 1.11-1.17;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009&amp;amp;lt;\u2009.001). Baseline severity of depression did not moderate variability in response to antidepressants. Variability in response to selective serotonin reuptake inhibitors was lower than variability in response to noradrenergic agents (coefficients of variation ratio, 0.88; 95% CI, 0.80-0.97;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u2009.01), as was the variability in response to other antidepressants compared with noradrenergic agents (coefficients of variation ratio, 0.87; 95% CI, 0.79-0.97;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u2009.001). Variability also tended to be lower in studies that were published more recently, with coefficients of variation changing by a value of 0.005 (95% CI, 0.002-0.008;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      \u2009=\u2009.003) for every year a study is more recent.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"ab-yoi190103-11\">\n                    <jats:title>Conclusions and Relevance<\/jats:title>\n                    <jats:p>Individual differences may be systematically associated with responses to antidepressants in major depressive disorder beyond placebo effects or statistical factors. This study provides empirical support for identifying moderators and personalizing antidepressant treatment.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1001\/jamapsychiatry.2019.4815","type":"journal-article","created":{"date-parts":[[2020,2,19]],"date-time":"2020-02-19T15:16:10Z","timestamp":1582125370000},"page":"607","source":"Crossref","is-referenced-by-count":36,"title":["RETRACTED: Individual Differences in Response to Antidepressants"],"prefix":"10.1001","volume":"77","author":[{"given":"Marta M.","family":"Maslej","sequence":"first","affiliation":[{"name":"Centre for Addiction and Mental Health, Toronto, Ontario, Canada"},{"name":"Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Toshiaki A.","family":"Furukawa","sequence":"additional","affiliation":[{"name":"Department of Health Promotion and Human Behavior, Kyoto University Graduate School of Medicine, School of Public Health, Yoshida-Konoe, Sakyo, Kyoto, Japan"},{"name":"Department of Clinical Epidemiology, Kyoto University Graduate School of Medicine, Kyoto University School of Public Health, Yoshida-Konoe, Sakyo, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrea","family":"Cipriani","sequence":"additional","affiliation":[{"name":"Department of Psychiatry, University of Oxford, Oxford, United Kingdom"},{"name":"Warneford Hospital, Oxford Health National Health Service Foundation Trust, Oxford, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul W.","family":"Andrews","sequence":"additional","affiliation":[{"name":"Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benoit H.","family":"Mulsant","sequence":"additional","affiliation":[{"name":"Centre for Addiction and Mental Health, Toronto, Ontario, Canada"},{"name":"Department of 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