Gray B
Department of Health Policy and Administration, Institute of Government and Public Affairs, School of Public Health, University of Illinois at Chicago, 60657-3525, USA.
J Health Econ. 2001 Jul;20(4):571-90. doi: 10.1016/s0167-6296(01)00085-6.
This study exploits a natural experiment to examine the relationship between Medicaid physician fees and birth outcomes among a national sample of pregnant women. Applying a cohort difference-in-differences methodology, I find a significant negative association between these fees and the risk of low birth weight. I estimate that a 10% higher than average relative Medicaid fee is independently associated with a 0.074% lower absolute risk of low birth weight (<2.5 kg) and a 0.035% lower risk of very low birth weight (<1.5kg) among Medicaid-insured women. For low-income women, this association grows significantly. Lastly, I find a moderate association between these fees and use of first trimester prenatal services.
本研究利用一项自然实验，在全国孕妇样本中检验医疗补助计划（Medicaid）医生诊疗费与出生结局之间的关系。运用队列差分法，我发现这些诊疗费与低出生体重风险之间存在显著的负相关关系。我估计，在参加医疗补助计划的女性中，相对医疗补助诊疗费比平均水平高10%，会使低出生体重（<2.5千克）的绝对风险独立降低0.074%，极低出生体重（<1.5千克）的风险降低0.035%。对于低收入女性，这种关联显著增强。最后，我发现这些诊疗费与孕早期产前服务的使用之间存在适度关联。
