我试图在R中绘制一个负二项模型的曲线图,但在使用偏移变量时,我甚至无法提取拟合值的置信限.有没有办法在不try 手动获取95%的配置项的情况下绘制图表?
y <- c(602,38,616,256,21,723,245,176,89,1614,31,27,313,251,345)
x <- c(31,35,21,30,37,26,45,21,74,27,37,37,31,37,25)
offset_1 <-c(72,50,31,30,16,25,75,16,78,40,68,25,71,52,17)
newdata <- data.frame(y,x,offset_1)
nb.model <- MASS::glm.nb(y ~ x + offset(log(offset_1)), data=newdata)
summary(nb.model)
predict(nb.model, type="response")/newdata$offset_1