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Studies were identified through literature search in MEDLINE and EMBASE up to June 20, 2014 with keywords related to \u201chyperglycaemia\u201d and \u201cROP\u201d. Nine eligible studies involving 1939 neonates with 509 cases of ROP were included. Unadjusted analyses showed that hyperglycemia was significantly associated with ROP (Odds ratio [OR] = 4.16, <jats:italic>P<\/jats:italic>&lt;0.0001). Comparing with the control, subjects in the ROP group had a significantly longer duration of hyperglycemia (Standardized mean difference [SMD] = 1.21, <jats:italic>P<\/jats:italic>&lt; 0.0001) and higher mean glucose level. (SMD = 0.88, <jats:italic>P<\/jats:italic> = 0.0004) However, when combining the adjusted OR (after adjustment for birth weight, gestational age and other factors) provided from individual studies, only borderline significant association were observed on duration of hyperglycemia with ROP (adjusted OR 1.08, <jats:italic>P<\/jats:italic> = 0.03); and no significant association on mean glucose level with ROP (adjusted OR = 1.08, <jats:italic>P<\/jats:italic> = 0.15). Hence, hyperglycemia cannot be definitely considered as a risk factor for ROP and further studies should adjust for potential confounding factors to clarify this association.<\/jats:p>","DOI":"10.1038\/srep09091","type":"journal-article","created":{"date-parts":[[2015,3,13]],"date-time":"2015-03-13T10:09:38Z","timestamp":1426241378000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":61,"title":["Association between hyperglycemia and retinopathy of prematurity: a systemic review and meta-analysis"],"prefix":"10.1038","volume":"5","author":[{"given":"Sunny C. 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