BACKGROUND Unwanted pregnancies are considered as one of the most important public health risks. Regarding the importance of the unwanted pregnancy in the country and helping health policy-makers obtain more accurate information on this issue, this study aims to provide a systematic review and meta-analytical on the prevalence of unwanted pregnancies in Iran. METHODS The present study was carried out using meta-analysis. Articles related to the topic were obtained through SID, Magiran, Scopus, PubMed, and ScienceDirect and Google Scholar databases from 2001 to 2017, Articles written based on cross-sectional studies were included in the study and other overviews, case-control, cohort, and interventional studies were excluded from the list of articles. Heterogeneity of studies was investigated using I2 index and data analysis was performed in Comprehensive Meta-Analysis software (Version 3). RESULTS In 23 articles, the prevalence of unwanted pregnancy in Iranian women was 27.9% (95%CI: 24-32.1%). The meta-regression analysis was used in two sample sizes and years of study. It was reported that as the sample size and Years increases, the prevalence of the unwanted pregnancy decrease, this difference was also statistically significant (P = 0.000). CONCLUSION Considering that the prevalence of unwanted pregnancy is high in Iran, it is necessary that health policy makers take effective measures to enhance the awareness of couples and public information about the risks of the unwanted pregnancy.

中文翻译：

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伊朗妇女意外怀孕的发生率：系统评价和荟萃分析。

背景技术意外怀孕被认为是最重要的公共卫生风险之一。鉴于意外怀孕在该国的重要性并帮助卫生政策制定者获得有关该问题的更准确信息，本研究旨在对伊朗意外怀孕的发生率进行系统回顾和荟萃分析。方法本研究采用荟萃分析的方法进行。与该主题相关的文章是通过 2001 年至 2017 年的 SID、Magiran、Scopus、PubMed、ScienceDirect 和 Google Scholar 数据库获得的。基于横断面研究撰写的文章包含在研究和其他概述、病例对照、队列、和介入研究被排除在文章列表之外。使用 I2 指数调查研究的异质性，并在综合荟萃分析软件（版本 3）中进行数据分析。结果 在 23 篇文章中，伊朗女性意外怀孕的患病率为 27.9%（95%CI：24-32.1%）。荟萃回归分析用于两个样本量和研究年限。据报道，随着样本量和年数的增加，意外怀孕的发生率下降，这种差异也具有统计学意义（P = 0.000）。结论 考虑到伊朗意外怀孕的发生率很高，卫生政策制定者有必要采取有效措施，提高夫妇和公众对意外怀孕风险的认识。