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Basic vital signs, clinical tests, and maternal information were collected at admission. Preterm infants were divided into a non-ROP group and a ROP group based on whether they eventually developed ROP. The receiver operating characteristic (ROC) curve was used to evaluate the predictive value of the above indexes and the combined indexes in the ROP of preterm infants. (1) The differences in systolic blood pressure (SBP), red blood cell count (RBC), hemoglobin (HGB), direct bilirubin (DBIL), and total bilirubin (TBIL) were statistically significant between the non-ROP group and ROP group (all <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). (2) RBC, HGB, DBIL, and TBIL, all of which have diagnostic value for ROP [area under curve (AUC) 0.643, 0644, 0.887, and 0.744, respectively, all <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05]. (3) The combined indicator possessed a good diagnostic value for ROP (AUC of 0.962, <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05), with a sensitivity and specificity of 88.64% and 91.49%, respectively. (4) Combined indicator (body temperature, body weight, heart rate, SBP, diastolic blood pressure, mean arterial pressure, RBC, HGB, red blood cell distribution width, DBIL, TBIL) has better diagnostic value for ROP than each of RBC, HGB, DBIL, and TBIL alone (Z-value 5.386, 5.475, 2.410 and 4.420, respectively, all <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). Combined indicator has good predictive value for ROP in preterm infants.<\/jats:p>","DOI":"10.1038\/s41598-025-92205-3","type":"journal-article","created":{"date-parts":[[2025,3,7]],"date-time":"2025-03-07T17:05:32Z","timestamp":1741367132000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Combined indicator assists in early recognition of retinopathy of prematurity"],"prefix":"10.1038","volume":"15","author":[{"given":"Wen","family":"Shi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liping","family":"Zhu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaori","family":"He","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuo","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cheng","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,3,7]]},"reference":[{"issue":"11","key":"92205_CR1","doi-asserted-by":"publisher","first-page":"1628","DOI":"10.1016\/S0161-6420(91)32074-8","volume":"98","author":"EA Palmer","year":"1991","unstructured":"Palmer, E. 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This research was approved by the Medical Ethics Committee of The Second Xiangya Hospital, Central South University [Ethical Audi No. Study K034 (2021)], and conforms to the principles stated in the Declaration of Helsinki.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"<!--Emphasis Type='Bold' removed-->Ethics approval and consent to participate"}},{"value":"Not applicable.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"<!--Emphasis Type='Bold' removed-->Consent for publication"}}],"article-number":"8048"}}