孕中晚期孕妇负性情绪发生的影响因素及风险预测模型构建OA

Objective:To explore the influencing factors of negative emotions in pregnant women in the second and third trimesters,construct a nomogram model,and prevent and predict the occurrence of negative emotions.Methods:A total of 333 pregnant women in the second and third trimesters of pregnancy who underwent regular prenatal check-up and prenatal consultation at Gansu Maternal and Child Health Hospital(Gansu Provincial Cen-tral Hospital)from December 1,2024 to March 31,2025 were selected as the research subjects.Subject grouping was performed based on single critical cutoff from multi-scale screening:emotional status of pregnant women were assessed through the Fear of Childbirth Scale,the Generalized Anxiety Scale and the Patient Health Ques-tionnaire.Pregnant women with scores exceeding the clinical cutoff value on any scale were divided into positive groups(183 cases).Those below all scale cutoffs were classified into the negative groups(150 cases).Multivari-ate Logistic regression was used to screen the independent risk factors for adverse mood and develop a predic-tive nomogram.Receiver operating characteristic(ROC)curve AUC was used to evaluate discrimination perform-ance,and calibration curve was adopted to assess model calibration accuracy.Results:Multivariate Logistic re-gression analysis revealed that primiparity,multiparity(≥2 births),disharmonious marital relationship,disharmoni-ous mother-in-law and daughter-in-law relationship,and daily exercise duration of 30-<60 min and≥60 min were independent risk factors for negative emotions(OR>1,P<0.05).Pregnancy combined with vaginitis and receipt of prenatal health education were protective factors(OR<1,P<0.05).The nomogram constructed from the six a-bove predictors yielded an AUC of 0.773,with a Brier score of 0.868,showing favorable calibration.Conclusions:The established nomogram presents satisfactory predictive efficacy.It is recommended to construct a multi-dimen-sional intervention program of"individual-family-exercise"relying on digital platform and multidisciplinary collabo-ration,including special maternal support,family counseling,and precision exercise prescription to achieve risk control of negative emotions during pregnancy.