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本文报告应用“点值法”测定成都市健康老年人260例的MEFV曲线,同时计算了几种常规肺功能指标,并以逐步回归分析作出7种指标的回归方程。所得MEFV曲线的一般规律是:其下降相随肺容量的减低而下降,且随年龄的增长而下降。用回代法检查出不适用的方程,根据情况,采用对数代换以建立符合男女实际的回归方程。
This article reports the use of “point value method” to determine the MEFV curve of 260 healthy elderly people in Chengdu. Meanwhile, several routine pulmonary function indexes were calculated, and the regression equation of seven indexes was made by stepwise regression analysis. The general rule for the resulting MEFV curve is that its decline decreases as lung capacity decreases, and decreases with age. Use the back-substitution method to check out the equation that is not applicable, according to the situation, the use of logarithmic substitution to establish a regression equation in line with the actual men and women.