四种预测心脏体积方法准确性和精确度的评价

为探讨以胸廓径线、体表面积、胸围、胸部身体的厚度预测心脏体积方法的可靠性和精确度 ,用X线平片进行心脏径线的测量 ,用逐步回归法得出以胸廓径线、体表面积、胸围、胸部身体的厚度预测个体心脏体积的回归方程 ,并比较它们的准确性和精确度。结果表明 :四种方法都可以用来预测个体心脏体积 ,但后两种方法精确度较前两种方法高。认为利用胸围、胸部身体的厚度预测心脏体积的方法较为简便、经济、又不失其可靠性和精确度 ,在大规模普查中筛选心脏疾患的对象有一定的实用价值

Evaluation of the accuracy and precision of four methods to predict the heart volume

In order to the accuracy and precision of methods to predict the heart volume with thoracic diameters, body surface area, chest circumference and thickness of the chest, the cardiac diameters were measured by chest radiogram. The regression equation which can predict heart volume with thoracic diameters, body surface area, chest circumference and thickness of the chest was obtained by stepwise regression, meanwhile, their accuracy and precision were also compared. Results showed that all the four methods can predict heart volume, but the precision of the last two were higher than those of the first two. This study indicated that the methods to predict heart volume with chest circumference, thickness of the chest were simple, economic, accurate and reliable, and there was applicable value in selecting heart diseases at mass survey.