极早产儿住院期间死亡的列线图预测模型的建立

doi:10.7499/j.issn.1008-8830.2202027

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Abstract Objective To establish a nomogram model for predicting the risk of death of very preterm infants during hospitalization. Methods A retrospective analysis was performed on the medical data of 1 714 very preterm infants who were admitted to the Department of Neonatology, the Third Affiliated Hospital of Zhengzhou University, from January 2015 to December 2019. These infants were randomly divided into a training cohort (1 179 infants) and a validation cohort (535 infants) at a ratio of 7∶3. The logistic regression analysis was used to screen out independent predictive factors and establish a nomogram model, and the feasibility of the nomogram model was assessed by the validation set. The area under the receiver operating characteristic curve (AUC), calibration curve, and decision curve analysis (DCA) were used to assess the discriminatory ability, accuracy, and clinical applicability of the model. Results Among the 1 714 very preterm infants, 260 died and 1 454 survived during hospitalization. By the multivariate logistic regression analysis of the training set, 8 variables including gestational age <28 weeks, birth weight <1 000 g, severe asphyxia, severe intraventricular hemorrhage (IVH), grade III-IV respiratory distress syndrome (RDS), and sepsis, cesarean section, and use of prenatal glucocorticoids were selected and a nomogram model for predicting the risk of death during hospitalization was established. In the training cohort, the nomogram model had an AUC of 0.790 (95%CI: 0.751-0.828) in predicting the death of very preterm infants during hospitalization, while in the validation cohort, it had an AUC of 0.808 (95%CI: 0.754-0.861). The Hosmer-Lemeshow goodness-of-fit test showed a good fit (P>0.05). DCA results showed a high net benefit of clinical intervention in very preterm infants when the threshold probability was 10%-60% for the training cohort and 10%-70% for the validation cohort. Conclusions A nomogram model for predicting the risk of death during hospitalization has been established and validated in very preterm infants, which can help clinicians predict the probability of death during hospitalization in these infants.

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	JUE Zhen-Zhen
	SONG Juan
	ZHOU Zhu-Ye
	LI Wen-Dong
	YUE Yu-Yang
	XU Fa-Lin

Key words： Death Risk factor Nomogram Predictive model Very preterm infant

Received: 07 February 2022

Cite this article:

JUE Zhen-Zhen,SONG Juan,ZHOU Zhu-Ye et al. Establishment of a predictive nomogram model for predicting the death of very preterm infants during hospitalization[J]. CJCP, 2022, 24(6): 654-661.

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http://www.zgddek.com/EN/10.7499/j.issn.1008-8830.2202027 OR http://www.zgddek.com/EN/Y2022/V24/I6/654

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