大家好！有一个问题向大家请教，希望可以多多指导：
如何求logistic回归连续型自变量1个SD改变的OR值和95%置信区间 For continuous-variable analyses, odds ratioswere calculated for a 1-SD increase in fasting,1-hour, and 2-hour plasma glucose levels；each glucosemeasurement was considered as both a categoricaland a continuous variable in multiple logisticregressionanalyses.；求问在SPSS里面如何实现啊？ 为什么连续变量要用SD，而不把值直接带入计算？