BACKGROUND: A declining fertility rate and aging population are major challenges for Vietnam. METHODS: This study utilizes panel data from the Vietnam Access to Resources Household Survey, conducted from 2008 to 2016, tracking 1,200 households over nine years. A fixed effects model was employed to control for unobserved factors, such as cultural traditions and fertility motivations, thereby addressing endogeneity issues commonly encountered in previous research. RESULTS: The results indicate that the presence of grandparent(s) in a household has a positive impact on the number of children born (particularly when both grandparents are present), with estimates ranging from 0.0771 (95% CI: 0.0175 to 0.1368) for both grandparents to 0.1373 (95% CI: 0.0824 to 0.1922) overall. This effect is especially prominent in the Central Highlands and the Northern Midlands/Mountainous Area. In contrast, the effect is less pronounced in the Mekong River Delta, likely due to socioeconomic factors and data limitations. CONTRIBUTION: This study highlights the importance of household structure in shaping fertility behavior and provides policy recommendations to support multigenerational households and promote sustainable fertility rates in Vietnam.
Nguyen et al. (Wed,) studied this question.