的,我目前工作的一个数据集与模型预测泊松回归
glm1 <- glm(FALL ~ GRP + AGE + SEX + offset(log(FU)), family=poisson, data=dat)
现在我需要做的瀑布量的预测在一年对于女性谁是控制小组。
我需要做predict
函数,但我不知道如何。我试图做几件事,最后尝试了这一点:
levels(dat$GRP)
levels(dat$SEX)
SEX="FEMALE"
GRP="CONTROL"
FU="12"
y<- predict(glm1, type = 'response')
plot(x=dat$AGE[order(dat$AGE)],y=y[order(dat$FALL)],type='l')
但这只给我一个奇怪的看起来情节。我需要做什么?
编辑:上请求数据添加用于再现
dat <- structure(list(FALL = c(0L, 1L, 0L, 0L, 0L, 0L, 0L, 0L, 2L, 1L,
2L, 0L, 0L, 0L, 1L, 0L, 1L, 1L, 0L, 0L, 1L, 1L, 1L, 0L, 0L, 1L,
3L, 0L, 1L, 1L, 0L, 0L, 2L, 3L, 0L, 0L, 3L, 1L, 0L, 0L, 2L, 1L,
2L, 2L, 1L, 1L, 0L, 0L, 0L, 4L, 1L, 0L, 0L, 0L, 0L, 2L, 3L, 1L,
0L, 1L, 2L, 1L, 0L, 1L, 0L, 0L, 1L, 0L, 0L, 0L, 0L, 0L, 0L, 1L,
3L, 4L, 0L, 1L, 0L, 0L, 1L, 1L, 2L, 0L, 0L, 1L, 0L, 0L, 0L, 0L,
1L, 0L, 1L, 0L, 0L, 3L, 0L, 0L, 2L, 0L, 0L, 2L, 0L, 3L, 1L, 0L,
0L, 1L, 1L, 2L, 1L, 0L, 0L, 0L, 0L, 1L, 0L), GRP = structure(c(1L,
2L, 2L, 2L, 2L, 1L, 2L, 1L, 1L, 1L, 2L, 2L, 1L, 2L, 2L, 1L, 1L,
2L, 2L, 2L, 1L, 1L, 2L, 2L, 2L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 1L,
2L, 2L, 1L, 2L, 2L, 2L, 2L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L,
1L, 1L, 1L, 2L, 2L, 1L, 1L, 2L, 1L, 2L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 2L, 2L, 1L, 2L, 1L, 2L, 1L, 1L, 1L, 2L, 1L, 1L, 2L, 1L, 1L,
1L, 1L, 2L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 1L, 1L, 1L, 2L,
2L, 1L, 2L, 2L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 1L, 1L, 1L, 1L, 2L,
2L, 2L, 2L, 1L), .Label = c("CONTROL", "TAI CHI"), class = "factor"),
FU = c(18, 12, 17, 4, 23, 16, 22, 24, 23, 11, 22, 9, 23,
8, 20, 17, 23, 17, 15, 17, 19, 21, 22, 16, 14, 21, 20, 21,
7, 22, 19, 12, 15, 21, 24, 11, 23, 21, 10, 15, 19, 19, 16,
24, 17, 23, 16, 17, 18, 18, 20, 8, 21, 16, 15, 19, 23, 14,
13, 6, 16, 18, 9, 7, 16, 14, 16, 18, 13, 12, 15, 22, 17,
17, 20, 21, 11, 24, 9, 13, 24, 12, 21, 20, 19, 17, 21, 15,
17, 11, 24, 10, 18, 9, 16, 19, 6, 13, 22, 18, 10, 15, 14,
21, 21, 5, 24, 21, 11, 23, 21, 16, 22, 6, 24, 18, 21), AGE = c(71,
81, 71, 79, 77, 79, 76, 86, 75, 75, 76, 83, 71, 80, 77, 79,
77, 74, 83, 81, 83, 79, 74, 79, 78, 85, 82, 71, 81, 78, 82,
74, 73, 75, 83, 78, 83, 83, 65, 75, 75, 75, 75, 78, 80, 69,
80, 73, 74, 79, 76, 78, 70, 77, 77, 76, 84, 71, 73, 76, 80,
77, 74, 78, 68, 76, 77, 76, 72, 72, 76, 82, 72, 80, 78, 83,
80, 73, 79, 75, 79, 75, 80, 77, 81, 78, 74, 79, 78, 74, 79,
77, 77, 85, 79, 73, 78, 73, 70, 68, 74, 82, 75, 77, 77, 73,
73, 83, 74, 87, 76, 81, 77, 78, 66, 79, 82), SEX = structure(c(1L,
1L, 1L, 1L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 1L, 2L, 1L, 1L, 1L,
2L, 2L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 2L, 2L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 1L,
2L, 2L, 2L, 2L, 1L, 1L, 2L, 1L, 1L, 2L, 1L, 2L, 1L, 2L, 2L,
1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 1L, 1L, 2L, 1L, 2L, 2L,
1L, 2L, 1L, 1L, 1L, 2L, 1L, 1L, 2L, 2L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 1L, 1L, 2L, 1L, 1L, 1L, 2L,
1L, 1L, 2L, 1L, 1L, 1L, 2L, 2L, 1L, 2L, 1L), .Label = c("FEMALE",
"MALE"), class = "factor")), .Names = c("FALL", "GRP", "FU",
"AGE", "SEX"), class = "data.frame", row.names = c(NA, -117L))
此致。
编辑:上置信区间
的问题,我有一个问题。我创建了如下的置信区间:
prs <- predict(glm1, newdata = newdat, type = "response", se.fit=TRUE)
newdat$pred <- prs[[1]]
newdat$se <- prs[[2]]
newdat$lo <- newdat$pred - 1.96 * newdat$se
newdat$up <- newdat$pred + 1.96 * newdat$se
但是可以在同一个图中绘制这个图吗?
谢谢你的建议,我会加上:) –
我是我们这个:glm1 < - (glm(FALL〜GRP + AGE + SEX + offset(log(FU)),family = poisson,data = dat)) –
Oke非常感谢!我会尝试,看看它是否有效:) –