S1 Appendix Sex ratio at birth in Vietnam among six subnational regions during 1980–2050, estimation and probabilistic projection using a Bayesian hierarchical time series model with 2.9 million birth records

This web appendix is for: Sex ratio at birth in Vietnam among six subnational regions during 1980–2050, estimation and probabilistic projection using a Bayesian hierarchical time series model with 2.9 million birth records本网络附录对应的研究主题为：1980年至2050年越南六个次国家级区域的出生人口性别比研究，该研究依托290万条出生记录，采用贝叶斯分层时间序列模型（Bayesian hierarchical time series model）开展估计与概率预测。