R语言处理Nhanes的加权Logistic回归
时间: 2024-01-10 21:04:39 浏览: 1998
要在R语言中进行Nhanes数据的加权Logistic回归,您需要执行以下步骤:
1. 下载并安装"Nhanes"库
```R
install.packages("Nhanes")
library(Nhanes)
```
2. 加载数据
```R
data(NHANES)
```
3. 筛选变量
```R
NHANES <- NHANES[, c("age", "bmi", "hyperten", "diabetes", "race", "smoke_now", "hypchol")]
```
4. 数据清理
```R
NHANES$hyperten <- as.factor(ifelse(NHANES$hyperten == 1, "Yes", "No"))
NHANES$diabetes <- as.factor(ifelse(NHANES$diabetes == 1, "Yes", "No"))
NHANES$race <- as.factor(ifelse(NHANES$race == 1, "Mexican American", ifelse(NHANES$race == 2, "Other Hispanic", ifelse(NHANES$race == 3, "Non-Hispanic White", ifelse(NHANES$race == 4, "Non-Hispanic Black", "Other"))))))
NHANES$smoke_now <- as.factor(ifelse(NHANES$smoke_now == 1, "Yes", "No"))
NHANES$hypchol <- as.factor(ifelse(NHANES$hypchol == 1, "Yes", "No"))
```
5. 加权
```R
weight <- NHANES$wtfa_sa
```
6. 拟合Logistic回归模型
```R
model <- glm(hyperten ~ age + bmi + diabetes + race + smoke_now + hypchol, family = binomial(), data = NHANES, weights = weight)
summary(model)
```
这将输出Logistic回归模型的摘要,包括系数、标准误、z值、p值和置信区间等信息。
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