求翻译：本研究利用去年是否生过病或者住过院以及上年度的个人自负医疗费用三个变量来衡量儿童的健康状况及其医疗支出，结果发现这三个变量对儿童的参保都没有产生明显的影响。这说明，对儿童这个群体，逆向选择的因素并不是明显。是什么意思？

In this study, whether students last year sick or hospitalized, and last year, individuals own health care costs three variables to measure children's health status and medical expenses, found that these three variables on children's insurance did not produce significant impact. This shows that the

This study will use last year and whether or not the disease or had been hospitalized for individuals as well as on their own medical care 3 variables to measure the health status of children and their health care expenditures, and found that one variable to 3 in the children are not have a signific

This research using last year whether has fallen ill or has been hospitalized as well as the previous year is proud the medical expense three variables to weigh child's state of health and the medical disbursement personally, finally discovered these three variables guarantee to child's senate all h

This study whether using last year too ill or live individuals out of Pocket medical expenses, as well as the previous year three variables to measure the child's health status and medical expenditures, results found that these three variables the insured did not have a significant impact on childre

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