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山西省属于我国出生缺陷高发地区,以医院为基础的监测系统监测至2000—2008年的出生缺陷率呈下降趋势,2004年开始至2008年一直低于全国平均水平,尤其是神经管缺陷下降趋势明显。2009年该监测系统监测到出生缺陷率有所上升。为了核实该系统出生缺陷监测结果的准确性,保证监测结?
Shanxi Province belongs to the high incidence of birth defects in our country. The hospital-based monitoring system shows that the birth defect rate has been decreasing from 2000 to 2008, and has been below the national average from 2004 to 2008, especially the decline of neural tube defects obvious. The monitoring system in 2009 monitored a rise in birth defects. In order to verify the accuracy of the birth defect monitoring results of this system, ensure the monitoring result?