Abstract
Our systematic review in BMC Psychiatry concluded that selective serotonin reuptake inhibitors (SSRIs) compared with placebo significantly increase the risk of serious adverse events (SAEs) in patients with major depression and the potential beneficial effects of SSRIs seem to be outweighed by the harms. Hieronymus et al. accused us of methodological inaccuracies and blatant errors. In their post-hoc analysis of our data, they reported that SSRIs only increase the risk of SAEs in elderly and seems safe for non-elderly patients. They also found our review misleading because our efficacy analyses were based on the 17-item Hamilton Depression Rating Scale; we included suboptimal SSRI doses; and we missed some 'pivotal trials'. We do not agree with Hieronymus et al. regarding several of the 'errors' they claim that we have made. However, we acknowledge that they have identified minor errors and that we missed some trials. After rectifying the errors and inclusion of the missed trials by us and Hieronymus et al., we re-analysed the data. The updated analyses are even more robust and confirm our earlier conclusions. SSRIs significantly increase the risk of an SAE both in non-elderly (p=0.045) and elderly (p=0.01) patients [overall odds ratio 1.39; 95% confidence interval (CI) 1.13 to 1.73; p=0.002; I2=0%]. Moreover, SSRIs did not change noticeably the 17-item Hamilton Depression Rating Scale, the internationally accepted scale (mean difference -2.02 points; 95% CI -2.38 to -1.66; p<0.00001). We found no differential effect of dose (p=0.20).
Highlights
Hieronymus et al raise doubts regarding our systematic review [1], which concluded that the potential small beneficial effects of selective serotonin reuptake inhibitors (SSRIs) seem to be outweighed by harmful effects in patients with major depressive disorder [2]
We have identified few additional trials that we already included in the original publication, but their data regarding serious adverse events (SAEs) were not reported earlier [18,19,20,21,22,23,24,25] and a few new additional trials that we and Hieronymus et al missed [26,27,28,29]
For publications where there was no information on the number of participants that were lost to followup, we considered the number of randomised participants for the analysis of SAEs
Summary
Non-elderly Elderly Test for heterogeneity subgroup subgroup between sub-groups (a) Original results in our publication [1]. 1. Intention-to-treat population if available or safety population used for analysis OR 1.36; 95% CI 1.07–1.73; p = 0.01. 6. Number of serious adverse events in paroxetine 25-mg group of GSK/785 trial [35] OR 1.36; 95% CI 1.07–1.73; p = 0.01 corrected. 8. Reciprocal of the opposite treatment group added to the number of events in the OR 1.37; 95% CI 1.07–1.73; p = 0.01 non-zero events group
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