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<article xsi:noNamespaceSchemaLocation="http://jats.nlm.nih.gov/publishing/1.1/xsd/JATS-journalpublishing1-mathml3.xsd" dtd-version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><front><journal-meta><journal-id journal-id-type="publisher-id">JCNR</journal-id><journal-title-group><journal-title>Journal of Clinical and Nursing Research</journal-title></journal-title-group><issn>2208-3685</issn><eissn>2208-3693</eissn><publisher><publisher-name>Bio-Byword Scientific Publishing Pty. Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26689/jcnr.v5i4.2285</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title>A Systematic Review of the Efficacy and Safety of Didroxyprogesterone Combined with Progesterone in the Treatment of Luteal Insufficiency-Induced Abortion</title><url>https://artdesignp.com/journal/JCNR/5/4/10.26689/jcnr.v5i4.2285</url><author>YangYanjing,ZhuHongli</author><pub-date pub-type="publication-year"><year>2021</year></pub-date><volume>5</volume><issue>4</issue><history><date date-type="pub"><published-time>2021-08-02</published-time></date></history><abstract>Objective: To systematically evaluate the efficacy and safety of didroxyprogesterone combined with progesterone in the treatment of luteal insufficiency abortion. Methods: We searched CNKI database, VIP database, Wanfang database, PubMed database, EMBASE database and Cochrane library database for literatures on the treatment of luteal insufficiency-induced abortion with didroxyprogesterone and progesterone. Meta-analysis was performed using Revman 5.3 software after literature extraction and further quality evaluation. Results: Ten randomized controlled trial-related articles that describe studies on a total of 1145 patients, 570 in the combination group and 575 in the control group, were included. The results of meta-analysis showed that combination therapy could improve the effective rate of fetal protection (OR = 0.14, 95% CI [0.07, 0.27], P &amp;lt; 0.00001). The safety of the combination group was significantly higher than that of the control group (OR = 3.09, 95% CI [1.13,8.48], P = 0.03). Conclusion: To sum up, compared with the control group, the combination of progesterone and progesterone is more effective and safer in the treatment of luteal insufficiency abortion. However, the sample size of the data is relatively small and the quality of the literature is low. This conclusion still needs to be further verified in high-quality randomized controlled trials that involve large samples.</abstract><keywords/></article-meta></front><body/><back><ref-list><ref id="B1" content-type="article"><label>1</label><element-citation publication-type="journal"><p>Lou Y, 2019, Effect of Progesterone Combined with Progesterone on Hormone Levels in Patients with Threatened Abortion with Luteal Insufficiency. 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