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Τετάρτη 18 Ιανουαρίου 2023

adverse events in analgesic trials of third molar removal

alexandrossfakianakis shared this article with you from Inoreader

Abstract

Background

The nocebo response refers to the phenomenon where nonspecific factors, including negative verbal suggestion and treatment expectations, cause adverse events (AE) following a placebo treatment. Nonspecific factors are also likely to influence AE occurrence following administration of active pharmacological treatments.

Objective

This meta-analysis aimed to estimate the nocebo response in dentistry by assessing the AEs prevalence in placebo- and active arms of randomised controlled trials (RCTs) assessing analgesic treatment following third molar (M3) surgery.

Methods

A systematic search was performed in PubMed, Embase, Scopus, Web of Science, and the Cochrane Central Register of Controlled Trials. Eligible studies had to report the number of patients experiencing at least one drug-related AE (patients with AE ≥ 1) separately for the active and placebo arms. The proportion of patients with AE ≥ 1 and drug-related dropouts were pooled, and risk differences (RDs) between patients in the placebo- and active arm were calculated.

Results

In 50 independent RCTs of 47 identified articles, the pooled rates of patients with AE ≥ 1 were 22.8% in the placebo arm and 20.6% in the active arm. The pooled rates of drug-related dropout were 0.24% in the placebo arm and 0.08% in the active arm. There were no significant RDs in patients with AE ≥ 1 and drug-related dropouts.

Conclusion

These results show that patients in the placebo arm reported AEs to the same extent as patients receiving active treatment, suggesting that most AEs in analgesic medication following M3 surgery may be attributed to the nocebo phenomenon.

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