Risk factor analysis and nomogram prediction model construction for NEC complicated by intestinal perforation.

"Declarations Ethics approval and consent to participateThe informed consent form was obtained from the participants and their guardians who understood and participated in this study. The study was approved by the Ethics Committee of the Affiliated Hospital of Zunyi Medical University (KLL-2022-657). All methods were carried out in accordance with relevant guidelines and regulations. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This study was supported by the National Natural Science Foundation of China (82260036), Collaborative Innovation Center of Chinese Ministry of Education (JKJTH-2020‑39); Guizhou Provincial Science and Technology Projects (QKHPTRC‑CXTD[2021]010)."