Given one or more risk prediction instruments (risk models) that estimate the probability of a binary outcome, rmda provides functions to estimate and display decision curves and other figures that help assess the population impact of using a risk model for clinical decision making.

2023年12月17日 · library(rmda) set.seed(20231216) #置信区间是通过bootstrap来实现的，为保证每次运行置信区间的一致，可设置随机种子 BSM.trainset<-decision_curve(chd~age+typea+tobacco+famhist+ldl,data=trainset,family=binomial(link='logit'),thresholds=seq(0,1,by=0.01))

The package rmda (risk model decision analysis) provides tools to evaluate the value of using a risk prediction instrument to decide treatment or intervention (versus no treatment or intervention).

使用lrm函数（来自rms包）在训练集上构建逻辑回归模型，其中Group为因变量，variable1和variable2是通过单因素和多因素分析筛选出来的自变量。 x=TRUE和y=TRUE指定返回预测值和响应值，maxit=1000设置最大迭代次数为1000次。 5.2 使用训练集上的模型在训练集和验证集上进行预测. 5.3 在训练集上绘制ROC曲线. 计算并绘制训练集的ROC曲线，显示AUC值和截断值。 main=paste("Training Set ROC-AUC=",round(auc_train,3)), #设置图形上方标题，可空. …

今天我们使用R语言的rmda包来演示一下DCA曲线的画法。 比如我们有如下图数据（同 ROC曲线 绘制数据）： rm (list=ls ()) #清空所有数据变量列表. install.packages () #安装包. library () #加载包. #载入数据集及安装包. install.packages (c ("rmda","readxl") library (readxl) library (rmda) ddata <- read_excel ("C:/Users/hyy/Desktop/DCA数据.xlsx") #将数据读取到R. #DCA参数运算. model1 <- decision_curve (结局~指标1,

The package rmda (risk model decision analysis) provides tools to evaluate the value of using a risk prediction instrument to decide treatment or intervention (versus no treatment or intervention).

The package ’rmda’ (risk model decision analysis) provides tools to evaluate the value of using a risk prediction instrument to decide treatment or intervention (versus no treatment or intervention).

2019年5月2日 · The package rmda (risk model decision analysis) provides tools to evaluate the value of using a risk prediction instrument to decide treatment or intervention (versus no treatment or intervention).

Given one or more risk prediction instruments (risk models) that estimate the probability of a binary outcome, rmda provides functions to estimate and display decision curves and other figures that help assess the population impact of using a risk model for clinical decision making.

2018年3月20日 · The package rmda (risk model decision analysis) provides tools to evaluate the value of using a risk prediction instrument to decide treatment or intervention (versus no