Lurie Ithai Zvi
U.S. Department of Treasury, Washington, DC 20220, USA.
Health Serv Res. 2009 Oct;44(5 Pt 1):1504-20. doi: 10.1111/j.1475-6773.2009.01005.x. Epub 2009 Jul 27.
This paper tests for differences in the effect of State Children's Health Insurance Program (SCHIP) on children's insurance coverage and physician visits across three age groups: pre-elementary school-aged children (pre-ESA), ESA children, and post-ESA children.
The study uses two cross sections of the Survey of Income and Program Participation (SIPP) from the 1996 and 2001 panels.
A difference-in-differences approach is used to estimate the effect of SCHIP on coverage and physician visits of newly eligible children of different age groups.
Demographic, insurance, and physician visit information for children in families with income below 300 percent of federal poverty line were extracted from the SIPP.
Uninsurance rates for post-ESA children declined due to SCHIP while public coverage and the likelihood of visiting a physician increased. Estimates of cross-age differences show that post-ESA children experienced a larger decline in uninsurance rates compared with pre-ESA and ESA children and a larger increase in physician visits compared with ESA children.
The higher rate of physician visits for post-ESA children due to SCHIP demonstrates the importance of extending insurance coverage to teens as well as young children.
本文检验了儿童健康保险计划（SCHIP）对三个年龄组儿童的保险覆盖范围和就医情况的影响差异，这三个年龄组分别是：学龄前儿童、小学适龄儿童（ESA）和小学适龄儿童之后的儿童。
该研究使用了1996年和2001年小组的收入与项目参与情况调查（SIPP）的两个横截面数据。
采用双重差分法来估计SCHIP对不同年龄组新符合资格儿童的保险覆盖范围和就医情况的影响。
从SIPP中提取了收入低于联邦贫困线300%的家庭中儿童的人口统计学、保险和就医信息。
由于SCHIP，小学适龄儿童之后的儿童的未参保率下降，而公共保险覆盖范围和就医可能性增加。跨年龄差异估计表明，与学龄前儿童和小学适龄儿童相比，小学适龄儿童之后的儿童的未参保率下降幅度更大，与小学适龄儿童相比，其就医次数增加幅度更大。
由于SCHIP，小学适龄儿童之后儿童的就医率较高，这表明将保险覆盖范围扩大到青少年以及幼儿的重要性。
