Objective: To conduct a Meta-analysis of case-control studies on risk factors of hypoglycemia in preterm infants to provide a theoretical basis for clinical prevention of hypoglycemia in preterm infants. Methods: Articles published in Pubmed, Web of Science, Scopus, China Knowledge Network, Wanfang Database, Vipshop Database, and China Biomedical Medical Literature Database(CBM) on the study of factors influencing hypoglycemia in preterm infants were systematically searched for all Chinese and English literature from the inception of the database to March 7, 2023. The quality of the literature was evaluated using the Newcastle-Ottawa scale, and Meta-analysis was performed using RevMan 5.4 software. Results: A total of 5 232 papers were retrieved and screened according to the inclusion and exclusion criteria, and finally 9 case-control studies were included in the Meta-analysis. Meta-analysis showed that the risk factors for hypoglycemia in preterm infants, in descending order of their associations, were gestational hypertension(OR=2.72, 95%CI:1.77-4.17, P<0.01); less than gestational age(OR=2.37, 95%CI:1.48-3.80, P<0.01); gestational diabetes(OR=2.15, 95%CI:1.33-3.49, P<0.01); cesarean section(OR=1.87, 95%CI:1.71-2.99, P<0.01); premature rupture of membranes(OR=0.71, 95%CI:0.53-0.95, P=0.02). Conclusion: The current evidence suggests that gestational hypertension, gestational diabetes mellitus, cesarean section, and young for gestational age are risk factors for hypoglycemia in preterm infants, but further high-quality prospective studies are needed to verify the findings. |