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However, studies with large samples on the factors of NEC in China have not been reported. This meta-analysis aims to systematically review the literature to explore the influencing factors of necrotizing enterocolitis in premature infants in China and provide a reference for the prevention of NEC.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>PubMed, Embase, Web of Science, Cochrane Library, China National Knowledge Infrastructure (CNKI), China Biomedical Literature Database (CBM), Wanfang and VIP databases were systematically searched from inception to February 2023. We used Stata14.0 software to perform the systematic review and meta-analysis. We used fixed or random effects models with combined odds ratios (ORs) and 95% confidence intervals (CIs), and quality was evaluated using the Newcastle\u2012Ottawa Scale (NOS).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The total sample was 8616 cases, including 2456 cases in the intervention group and 6160 cases in the control group. It was found that 16 risk factors and 3 protective factors were related to necrotizing enterocolitis in premature infants. Septicemia (OR\u2009=\u20093.91), blood transfusion (OR\u2009=\u20092.41), neonatal asphyxia (OR\u2009=\u20092.46), pneumonia (OR\u2009=\u20096.17), infection (OR\u2009=\u20095.99), congenital heart disease (OR\u2009=\u20094.80), intrahepatic cholestasis of pregnancy (ICP) (OR\u2009=\u20092.71<jats:italic>)<\/jats:italic>, mechanical ventilation (OR\u2009=\u20091.44), gestational diabetes mellitus (GDM) (OR\u2009=\u20093.08), respiratory distress syndrome (RDS) (OR\u2009=\u20093.28), hypoalbuminemia (OR\u2009=\u20092.80), patent ductus arteriosus (PDA) (OR\u2009=\u20093.10), respiratory failure (OR\u2009=\u20097.51), severe anemia (OR\u2009=\u20092.86), history of antibiotic use (OR\u2009=\u20092.12), and meconium-stained amniotic fluid (MSAF) (OR\u2009=\u20093.14) were risk factors for NEC in preterm infants in China. Breastfeeding (OR\u2009=\u20090.31), oral probiotics (OR\u2009=\u20090.36), and prenatal use of glucocorticoids (OR\u2009=\u20090.38) were protective factors for NEC in preterm infants.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Septicemia, blood transfusion, neonatal asphyxia, pneumonia, infection, congenital heart disease, ICP, GDM, RDS, hypoproteinemia, PDA, respiratory failure, severe anemia, history of antibiotic use and MSAF will increase the risk of NEC in premature infants, whereas breastfeeding, oral probiotics and prenatal use of glucocorticoids reduce the risk. Due to the quantity and quality of the included literature, the above findings need to be further validated by more high-quality studies.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12887-024-04607-3","type":"journal-article","created":{"date-parts":[[2024,2,29]],"date-time":"2024-02-29T04:33:28Z","timestamp":1709181208000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["Factors influencing necrotizing enterocolitis in premature infants in China: a systematic review and meta-analysis"],"prefix":"10.1186","volume":"24","author":[{"given":"Shuliang","family":"Zhao","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huimin","family":"Jiang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yiqun","family":"Miao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenwen","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanan","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hui","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aihua","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinghui","family":"Cui","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuanyuan","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,2,29]]},"reference":[{"key":"4607_CR1","doi-asserted-by":"publisher","first-page":"255","DOI":"10.1056\/NEJMra1005408","volume":"364","author":"J Neu","year":"2011","unstructured":"Neu J, Walker W. 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