Does the Delivery of Primary Health Care Improve Birth Outcomes?
利用社区健康中心（CHCs）的推广和事件研究方法，发现为弱势群体提供初级卫生保健能在七年内提高出生体重并降低低出生体重概率，机制是增加早期产前护理和减少吸烟。
<h3>Abstract</h3> Community Health Centers (CHCs) deliver primary care to underserved populations by locating sliding-scale clinics in disadvantaged areas. We investigate how this policy affected infant health using the rollout of CHCs and a flexible event study framework with Vital Statistics natality data. We find that maternal access to CHCs improves infant health outcomes within seven years after their introduction. Treatment-on-the-treated estimates show a 25- to 42-gram increase in birth weight and a 9% to 16% reduction in the likelihood of low birth weight. These improvements can be explained by increased access to early prenatal care and reductions in maternal smoking.