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目的:通过对中国正常中老年男性用力肺活量参考值资料、地理资料等相关资料的收集,用统计学方法研究随着海拔高度的逐渐增加,对中老年男性用力肺活量改变的地理分布规律。方法:相关资料应用SPSS统计软件,运用逐步回归分析的方法推导出中国正常中老年男性用力肺活量参考值与地理
OBJECTIVE: To investigate the geographical distribution of forced vital capacity changes of middle-aged and old men with the increase of altitude above sea level by using statistical methods to collect the reference data and geography data of forced vital capacity of normal middle-aged and old men in China. Methods: Relevant data using SPSS statistical software, the use of stepwise regression analysis derived normal Chinese middle-aged men’s forced vital capacity reference value and geography