图1. 预测子代先心病列线图模型 每个预测指标的数值所在区间对应某个刻度，该刻度向评分标准的线段作垂直线即可得到相应的分值，总分即所有指标分值相加。以总分线段上的对应分值点向先心病发生概率线段作垂直线，即可得到孕期重金属元素和微量元素不同浓度条件下子代先心病的发生概率。［Al］铝；［Th］钍；［Sb］锑；［Mg］镁；［Pb］铅。.
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