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Abstract Background Preoperative anxiety affects 60 to 80% of patients who are candidates for surgery. Reducing preoperative anxiety can improve surgical outcomes, shorten hospital stays, and minimize disruptions in lifestyle. Having information affects people ability to identify important points and improve their understanding, and lack of information causes fear and anxiety, which negatively affects decision-making. Studies have shown that the intervention of education before cesarean section has a beneficial effect on women anxiety level. Providing information before surgery can reduce patients’ anxiety. This study was conducted to determine the effect of information video before elective cesarean delivery on preoperative anxiety and post-operative satisfaction. Methods The search for relevant studies was systematically conducted in PubMed, Scopus, Web of Science, Cochrane Library, SID (Persian database), and Google Scholar (search engine) until July 4, 2023, in both English and Persian languages. The revised tool for assessing the risk of bias in randomized trials (RoB 2.0) and ROBIN-I were used to evaluate the risk of bias, and heterogeneity was assessed using I². In cases of high heterogeneity, a random effects model was used instead of a fixed effects model. Subgroup analysis was performed based on the duration of the video, and the type of intervention for the primary outcome. Sensitivity analysis was conducted based on the type of study. A random-effects meta-regression analysis was conducted to identify potential sources of high heterogeneity for preoperative anxiety. The certainty of the evidence was assessed using GRADE. Results A total number of 557 articles were found in databases. Three hundred sixty-eight studies were screened based on their titles, abstracts, and full texts. Of these, 16 studies were assessed for eligibility, and 7 were excluded. Ultimately, nine papers were included. Meta-analysis results showed that the information video before elective cesarean delivery compared to control group may have little or no effect on preoperative anxiety, but the evidence is uncertain (SMD − 0.22, 95% CI -0.51 to 0.06, 9 trials, 1020 participants, I2 = 80%; very low-certainty evidence). Also, it probably increases the post-operative satisfaction (SMD 0.26, 95% CI 0.10 to 0.42, 5 trials, 618 participants, I2 = 0%; Moderate-certainty evidence). The random effect meta-regression analyses indicated a significant correlation between the mean age of the intervention group (β = 0.137, P |
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