目的 探讨基于网络的Cox健康行为互动模式在初产妇孕晚期体质量管理中的应用效果，以期为孕晚期体质量管理方案的制订提供参考。 方法 便利抽样法选取2021年7-12月福建省泉州市某三级甲等综合医院建卡且规律产检的初产妇140名为研究对象，按就诊单双号分为对照组（n=70）和观察组（n=70）。对照组采用常规的围产期体质量管理，观察组采用基于线上孕妇学校的Cox健康行为互动模式进行体质量管理。比较两组初产妇孕晚期的体质量管理情况、顺产率、巨大儿及低体重儿出生率的差异。 结果 干预后，观察组体质量管理情况、顺产率高于对照组；巨大儿和低体重儿出生率低于对照组，差异均有统计学意义（均P＜0.05）。 结论 基于线上孕妇学校的Cox健康行为互动模式对初产妇进行体质量管理，可科学管理孕晚期体质量，提高顺产率，降低巨大儿及低体重儿出生率。

Objective To explore the effects of Web-based intervention using Cox interaction model of client health behavior applied to pregnant women for controlling gestational weight gain during late pregnancy. Methods From July to December 2021,140 primipara registered in a general hospital in Quanzhou City,Fujian Province were divided into a control group（n=70）and an experimental group（n=70）according to odd or even number of registration.The control group received routine antenatal weight management,while the experimental group was subjected to online weight management interventions based on the Cox interaction model.The differences in body weight,vaginal birth rate,macrosomia and low birth weight rates between the two groups were compared. Results The experimental group had significantly less weight gain,higher vaginal birth rate,and lower macrosomia and low birth weight rates compared with the control group（all P＜0.05 ）. Conclusions Online weight management intervention based on Cox interaction model of client health behavior for pregnant women can control excessive weight gain during late pregnancy,enhance vaginal birth rate,and reduce macrosomia and low birth weight rates.

R473.71

泉州市科技计划项目（2018N076S）