Parental and Social Factors' Contribution to Adverse Pregnancy Outcomes with Urban-Rural Disparities - Four Provinces, China, 2011-2020.

What is already known about this topic?: The prevalence of adverse pregnancy outcomes (APOs) exhibits a disparity between urban and rural areas, which is commonly associated with various factors, such as demographic and socio-environmental factors. However, the specific contribution of each factor has not yet been elucidated.

What is added by this report?: This study demonstrates that the primary factors contributing to urban-rural differences in the prevalence of APOs are population structure, parental age, parity, and regional development.

What are the implications for public health practice?: Future prevention and control measures should be directed toward considering population structure and regional differences. Accurate interventions will enhance the efficiency of public health services.