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imputation.Rmd
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imputation.Rmd
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---
title: "MICE"
author: "Dmitrii Zhakota"
date: "`r Sys.Date()`"
output: html_document
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
library(mice)
#devtools::install_github(repo = "amices/mice")
library(missRanger)
library(dlookr)
# library(ggplot2)
library(ggmice)
# library(dplyr)
library(tidyverse)
seed = 123
```
# Load data
```{r}
df <- read.csv("data/interim/df1.csv")
```
# Prepare data
```{r}
# Привести к факторам или числам
factors_auto <- df %>% select_if(function(x) {all(unique(x) %in% c(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, NA))}) %>% colnames()
factors_list <- c("Case_Num", "Gender")
df %>% mutate(across(
c(all_of(factors_auto), all_of(factors_list)), as.factor
)) -> df1
df1 <- df1 %>%
mutate(across(c(Birth_Date, OS_Date, Last_FU, Sx_Date, FUEcho_Date), ~ as.Date(. )))
class(df1$Birth_Date)
# df1 <- df1 %>%
# dplyr::filter(!is.na(Last_FU))
# # Предполагаем значение Prosthesis_Anat_Size по LVOT
# df2 <- df1 %>%
# # select(Case_Num, Age, Gender, Height, Weight, NYHA_Heart_Fail_Class, Prosthesis_Anat_Size, Pre_LVOT) %>%
# filter(Height != 0) %>%
# filter(Weight != 0)
# Приводим к одной размерности Prosthesis_Anat_Size и Pre_LVOT
df2 <- df1 %>%
mutate(Pre_LVOT = ifelse(Pre_LVOT < 10, Pre_LVOT*10, Pre_LVOT))
# смотрим сколько значений в столбце Prosthesis_Anat_Size пропущено и их можно заменить по Pre_LVOT
df3 <- df2 %>%
# filter(is.na(Prosthesis_Anat_Size)) %>%
filter(!is.na(Pre_LVOT))
```
# Analysis
```{r}
df3 %>%
select(Age, Gender, BMI, STS, NYHA_Heart_Fail_Class, Prosthesis_Anat_Size, Upsizing, Pre_LVOT) %>%
diagnose_numeric()
df2 %>%
select(Age, Gender, BMI, STS, NYHA_Heart_Fail_Class, Prosthesis_Anat_Size, Upsizing, Pre_LVOT) %>%
plot_na_pareto()
df3 %>%
select(Age, Gender, BMI, STS, NYHA_Heart_Fail_Class, Prosthesis_Anat_Size, Upsizing, Pre_LVOT) %>%
plot_na_pareto()
df2 %>%
select(Age, Gender, BMI, STS, NYHA_Heart_Fail_Class, Prosthesis_Anat_Size, Upsizing, Pre_LVOT) %>%
plot_na_intersect()
# Зависят ли пропуски Pre_LVOT от даты операции
df2 %>%
select(c(Pre_LVOT, Sx_Date)) %>%
arrange(Sx_Date)
df2 %>%
# select all variable starts with Pre_
select(starts_with("Pre_")) %>%
plot_na_intersect()
df2 %>%
# select all variable starts with Pre_
select(starts_with("Post_")) %>%
plot_na_intersect()
# # Outlier detection Prosthesis_Anat_Size and Pre_LVOT
# diagnose_outlier(df2, Prosthesis_Anat_Size, Pre_LVOT)
# Prosthesis_Anat_Size_capping <- imputate_outlier(df2, Prosthesis_Anat_Size, method = "capping")
# Pre_LVOT_capping <- imputate_outlier(df2, Pre_LVOT, method = "capping")
```
# dlookr imputation
```{r}
df3 %>%
select(Case_Num, Age, Gender, BMI, NYHA_Heart_Fail_Class, Prosthesis_Anat_Size, STS, Pre_LVOT) -> df3d
# Prosthesis_Anat_Size2r <- imputate_na(df2, Prosthesis_Anat_Size, Pre_LVOT, method = "rpart")
# Prosthesis_Anat_Size2m <- imputate_na(df2, Prosthesis_Anat_Size, Pre_LVOT, method = "mice")
# Prosthesis_Anat_Size2k <- imputate_na(df2, Prosthesis_Anat_Size, Pre_LVOT, method = "knn")
Prosthesis_Anat_Size3mean <- imputate_na(df3d, Prosthesis_Anat_Size, Pre_LVOT, method = "mean") #Mean
Prosthesis_Anat_Size3r <- imputate_na(df3d, Prosthesis_Anat_Size, Pre_LVOT, method = "rpart") #Recursive Partitioning and Regression Trees
Prosthesis_Anat_Size3m <- imputate_na(df3d, Prosthesis_Anat_Size, Pre_LVOT, method = "mice") #Multivariate Imputation by Chained Equations
Prosthesis_Anat_Size3k <- imputate_na(df3d, Prosthesis_Anat_Size, Pre_LVOT, method = "knn") #k-Nearest Neighbour Imputation
# plot(Prosthesis_Anat_Size2r)
# plot(Prosthesis_Anat_Size2m)
# plot(Prosthesis_Anat_Size2k)
plot(Prosthesis_Anat_Size3mean)
plot(Prosthesis_Anat_Size3r)
plot(Prosthesis_Anat_Size3m)
plot(Prosthesis_Anat_Size3k)
View(Prosthesis_Anat_Size3r)
```
# Multivariate Imputation by Chained Equations (MICE)
```{r eval=FALSE, include=FALSE}
df3 %>%
select(Age, Gender, BMI, NYHA_Heart_Fail_Class, Prosthesis_Anat_Size, STS, Pre_LVOT) -> df4
# Imputation methods
imp_pmm <- mice(df4, meth = "pmm", printFlag = FALSE) # Predictive Mean Matching
imp_midastouch <- mice(df4, meth = "midastouch", printFlag = FALSE) # Weighted predictive mean matching
imp_sample <- mice(df4, meth = "sample", printFlag = FALSE) # Random sample from observed values
imp_cart <- mice(df4, meth = "cart", printFlag = FALSE) # Classification and Regression Trees
imp_rf <- mice(df4, meth = "rf", printFlag = FALSE) # Random Forest
imp_mean <- mice(df4, meth = "mean", printFlag = FALSE) # Mean
imp_norm <- mice(df4, meth = "norm", printFlag = FALSE) # Bayesian linear regression
# imp_norm_nob <- mice(df4, meth = "norm.nob") # Linear regression ignoring model error
# imp_norm_boot <- mice(df4, meth = "norm.boot") # Linear regression using bootstrap
# imp_norm_predict <- mice(df4, meth = "norm.predict") # Linear regression, predicted values
imp_lasso.norm <- mice(df4, meth = "lasso.norm", printFlag = FALSE) # Lasso linear regression
imp_lasso.select.norm <- mice(df4, meth = "lasso.select.norm", printFlag = FALSE) # Lasso select + linear regression
# imp_quadratic <- mice(df4, meth = "quadratic") # Imputation of quadratic terms
# imp_ridge <- mice(df4, meth = "ridge") # Random indicator for nonignorable data
# mice::anova(as.mira(imp_pmm), method = "D1", use = "wald")
# Compare density plots of imputed data with original data
den_pmm <- mice::densityplot(imp_pmm, main = "Predictive Mean Matching")
den_midastouch <- mice::densityplot(imp_midastouch, main = "Weighted predictive mean matching ")
den_sampl <- mice::densityplot(imp_sample, main = "Random sample from observed values")
den_cart <- mice::densityplot(imp_cart, main = "Classification and Regression Trees")
den_rf <- mice::densityplot(imp_rf, main = "Random Forest")
den_mean <- mice::densityplot(imp_mean, main = "Mean")
den_norm <- mice::densityplot(imp_norm, main = "Bayesian linear regression")
# mice::densityplot(imp_norm_nob)
# mice::densityplot(imp_norm_boot)
# mice::densityplot(imp_norm_predict)
den_lasso.norm <- mice::densityplot(imp_lasso.norm, main = "Lasso linear regression")
den_lasso.select <- mice::densityplot(imp_lasso.select.norm, main = "Lasso select + linear regression")
# mice::densityplot(imp_quadratic)
# mice::densityplot(imp_ridge)
# Compare boxplots of imputed data with original data
mice::bwplot(imp_pmm)
mice::bwplot(imp_rf)
# Convergence diagnostics
mice::convergence(imp_pmm)
mice::convergence(imp_rf)
# Imputation diagnostics
plot_pmm <- plot(imp_pmm, main = "Predictive Mean Matching", layout = c(2, 1))
plot(imp_midastouch, main = "Weighted predictive mean matching ", layout = c(2, 1))
plot(imp_sample, main = "Random sample from observed values", layout = c(2, 1))
plot(imp_cart, main = "Classification and Regression Trees", layout = c(2, 1))
plot_rf <- plot(imp_rf, main = "Random Forest", layout = c(2, 1))
plot(imp_mean, main = "Mean", layout = c(2, 1))
plot(imp_norm, main = "Bayesian linear regression", layout = c(2, 1))
# plot(imp_norm_nob)
# plot(imp_norm_boot)
# plot(imp_norm_predict)
plot(imp_lasso.norm, main = "Lasso linear regression", layout = c(2, 1))
plot(imp_lasso.select.norm, main = "Lasso select + linear regression", layout = c(2, 1))
# plot(imp_quadratic)
# plot(imp_ridge)
###############################################################################################################
mice::xyplot(imp_cart, Pre_LVOT ~ Prosthesis_Anat_Size | .imp)
mice::stripplot(imp_cart, Prosthesis_Anat_Size ~ .imp, pch=20, cex=2)
# Extract the imputed data
mice::complete(imp_cart, action = "long")
mice::complete(imp_cart, action = "stacked")
mice::complete(imp_cart, action = 0)
#####################################################################################################################
fit <- with(df, lm(Prosthesis_Anat_Size ~ Age + Gender + BMI + NYHA_Heart_Fail_Class + STS + Pre_LVOT))
# fit <- with(df, lm(Age ~ Prosthesis_Anat_Size))
summary(pool(fit))
summary(fit)
mice::pool(fit)
ggmice(df3, aes(x = Prosthesis_Anat_Size, y = Pre_LVOT)) + geom_point()
ggmice(imp_rf, aes(x = Prosthesis_Anat_Size, y = Pre_LVOT)) + geom_point()
df_rf <- complete(imp_rf)
densityplot(imp_rf)
plot(imp_rf)
fit2 <- with(df_rf, lm(Prosthesis_Anat_Size ~ Age + Gender + BMI + NYHA_Heart_Fail_Class + STS + Pre_LVOT))
# summary(pool(fit))
summary(fit2)
df_cart <- complete(imp_cart)
mice_compare <- data.frame(Prosthesis_Anat_Size = c(df4$Prosthesis_Anat_Size, df_cart$Prosthesis_Anat_Size),
group = c(rep("original", nrow(df4)), rep("imputation", nrow(MissRander_df3))))
mice_compare$size <- round(mice_compare$Prosthesis_Anat_Size, 0)
grouped_ggbetweenstats(
data = dplyr::filter(mice_compare, size %in% c(21, 22, 23, 24, 25, 26)),
x = group,
y = Prosthesis_Anat_Size,
grouping.var = size,
type = "nonparametric",
effsize.type = "eta",
paired = TRUE,
plot.type = "box",
plot.points = "jitter",
# title = "Prosthesis_Anat_Size",
xlab = "",
ylab = "",
legend.title = "group",
ggtheme = theme_minimal()
)
densityplot(imp_cart)
ggmice(imp_cart, ggplot2::aes(x = Prosthesis_Anat_Size, group = .imp)) +
ggplot2::geom_density()
# Combine plots#####################################################################################################################
library(gridExtra)
a <- grid.arrange(den_pmm, plot_pmm, ncol = 2)
b <- grid.arrange(den_rf, plot_rf, ncol = 2)
grid.arrange(a, b, nrow = 2)
```
# missRanger
```{r}
MissRander_df3 <- missRanger(
df3,
formula = Prosthesis_Anat_Size ~ c(Age, Gender, BMI, NYHA_Heart_Fail_Class, Prosthesis_Anat_Size, STS, Pre_LVOT),
pmm.k = 3,
num.trees = 1000,
verbose = 2,
seed = 123,
returnOOB = TRUE
)
MissRander_df30 <- missRanger(
df3,
formula = Prosthesis_Anat_Size ~ c(Age, Gender, BMI, NYHA_Heart_Fail_Class, Prosthesis_Anat_Size, STS, Pre_LVOT),
# pmm.k = 3,
num.trees = 1000,
verbose = 2,
seed = 123,
returnOOB = TRUE,
data_only = FALSE,
keep_forests = TRUE
)
# Imputation for Prosthesis_Anat_Size only by Pre_LVOT
MissRander_df31 <- missRanger(
df3,
formula = Prosthesis_Anat_Size ~ Pre_LVOT,
pmm.k = 3,
num.trees = 1000,
verbose = 2,
seed = 123,
returnOOB = TRUE,
data_only = FALSE,
keep_forests = TRUE
)
MissRander_df32 <- missRanger(
df3,
formula = Prosthesis_Anat_Size ~ c(Prosthesis_Anat_Size, Pre_LVOT),
# pmm.k = 3,
num.trees = 1000,
verbose = 2,
seed = 123,
returnOOB = TRUE,
data_only = FALSE,
keep_forests = TRUE
)
# Imputation for Prosthesis_Anat_Size and Pre_LVOT
# Prosthesis_Anat_Size_imputet_df2 <- missRanger(
# df2,
# formula = . ~ . ,
# # pmm.k = 3,
# num.trees = 1000,
# verbose = 2,
# seed = 111,
# returnOOB = T)
# normality test dlookr
# plot_normality(MissRander_df3)
# imputation result for multivariate imputation
ggplot()+
geom_point(data = MissRander_df3, aes(Prosthesis_Anat_Size, Pre_LVOT), color = "red", size = 5)+
geom_point(data = df3, aes(Prosthesis_Anat_Size, Pre_LVOT), color = "grey", alpha = 0.5, size = 5, na.rm = FALSE)+
xlab("Prosthesis anatomic size")+
ylab("LVOT befor operation")+
theme_minimal()
# imputation result only for Prosthesis_Anat_Size. Red dots are imputed values.
ggplot()+
geom_point(data = MissRander_df31$data, aes(Prosthesis_Anat_Size, Pre_LVOT), color = "red")+
geom_point(data = df3, aes(Prosthesis_Anat_Size, Pre_LVOT), alpha = 0.2)+
theme_minimal()
# imputation result for Prosthesis_Anat_Size and Pre_LVOT
# ggplot()+
# geom_point(data = Prosthesis_Anat_Size_imputet_df2, aes(Prosthesis_Anat_Size, Pre_LVOT),
# color = "red")+
# geom_point(data = df2, aes(Prosthesis_Anat_Size, Pre_LVOT))+
# theme_minimal()
# Density plot for Prosthesis_Anat_Size df3 and MissRander_df3
# densityplot(df3$Prosthesis_Anat_Size)
# densityplot(MissRander_df3$Prosthesis_Anat_Size)
MissRander_df30$pred_errors[MissRander_df30$best_iter, "Prosthesis_Anat_Size"] # 1 - R-squared
MissRander_df30$forests$Prosthesis_Anat_Size
MissRander_df30$pred_errors
MissRander_df31$pred_errors[MissRander_df31$best_iter, "Prosthesis_Anat_Size"] # 1 - R-squared
MissRander_df31$forests$Prosthesis_Anat_Size
MissRander_df31$pred_errors
MissRander_df32$pred_errors[MissRander_df32$best_iter, "Prosthesis_Anat_Size"] # 1 - R-squared
MissRander_df32$forests$Prosthesis_Anat_Size
MissRander_df32$pred_errors
```
# Compare original and imputation
```{r}
# Create new dataframe Prosthesis_Anat_Size_compare whith two columns AK_NN and group. Select Prosthesis_Anat_Size from df3. Put in Prosthesis_Anat_Size_compare and mark like group original. Select Prosthesis_Anat_Size from MissRander_df3 and put in Prosthesis_Anat_Size_compare and mark like group imputet.
Prosthesis_Anat_Size_compare <- data.frame(Prosthesis_Anat_Size = c(df3$Prosthesis_Anat_Size, MissRander_df3$Prosthesis_Anat_Size),
group = c(rep("original", nrow(df3)), rep("imputation", nrow(MissRander_df3))))
# Add column size in Prosthesis_Anat_Size_compare. Copy values from Prosthesis_Anat_Size_compare$Prosthesis_Anat_Size to Prosthesis_Anat_Size_compare$size. Round to 0 decimal places.
Prosthesis_Anat_Size_compare$size <- round(Prosthesis_Anat_Size_compare$Prosthesis_Anat_Size, 0)
Prosthesis_Anat_Size_compare$Prosthesis_Anat_Size <- round(Prosthesis_Anat_Size_compare$Prosthesis_Anat_Size, 0)
####################################################################
Prosthesis_Anat_Size_compare31 <- data.frame(Prosthesis_Anat_Size = c(df3$Prosthesis_Anat_Size, MissRander_df31$data$Prosthesis_Anat_Size),
group = c(rep("original", nrow(df3)), rep("imputation", nrow(MissRander_df31$data))))
# Add column size in Prosthesis_Anat_Size_compare. Copy values from Prosthesis_Anat_Size_compare$Prosthesis_Anat_Size to Prosthesis_Anat_Size_compare$size. Round to 0 decimal places.
Prosthesis_Anat_Size_compare$size <- round(Prosthesis_Anat_Size_compare$Prosthesis_Anat_Size, 0)
Prosthesis_Anat_Size_compare$Prosthesis_Anat_Size <- round(Prosthesis_Anat_Size_compare$Prosthesis_Anat_Size, 0)
############################################################################
# plot_normality(Prosthesis_Anat_Size_compare)
library(ggstatsplot)
# Сравние группы original и imputation в общем
ggbetweenstats(
data = Prosthesis_Anat_Size_compare,
x = group,
y = Prosthesis_Anat_Size,
type = "nonparametric",
# effsize.type = "eta",
paired = TRUE,
plot.type = "box",
plot.points = "jitter",
# title = "Prosthesis_Anat_Size",
xlab = "",
ylab = "Anatomic size of the aortic valve",
legend.title = "group",
ggtheme = theme_minimal()
)
#
# Prosthesis_Anat_Size_compare %>%
# # group_by(size) %>%
# dplyr::filter(group == "original") %>%
# # dplyr::filter(!is.na(size)) %>%
# # dplyr::filter(size == 23) %>%
# normality(Prosthesis_Anat_Size)
#
# Prosthesis_Anat_Size_compare %>%
# # group_by(size) %>%
# dplyr::filter(group == "imputation") %>%
# # dplyr::filter(!is.na(size)) %>%
# # dplyr::filter(size == 23) %>%
# normality(Prosthesis_Anat_Size)
# Сравние группы original и imputation по размеру протеза. Сравниваем для каждого размера группы original и imputation.
grouped_ggbetweenstats(
data = Prosthesis_Anat_Size_compare,
# data = dplyr::filter(Prosthesis_Anat_Size_compare, size %in% c(21, 22, 23, 24, 25, 26)),
x = group,
y = Prosthesis_Anat_Size,
grouping.var = size,
type = "parametric",
effsize.type = "eta",
paired = TRUE,
plot.type = "box",
plot.points = "jitter",
# title = "Prosthesis_Anat_Size",
xlab = "",
ylab = "Anatomic size of the aortic valve",
legend.title = "group",
ggtheme = theme_minimal()
)
# Prosthesis_Anat_Size_compare %>%
# dplyr::filter(!is.na(size)) %>%
# dplyr::filter(size == 25) -> t25
# t.test(Prosthesis_Anat_Size ~ group, data = t25)
#
# # t.test for Prosthesis_Anat_Size_compare for each size in group original and imputation
#
# t.test(Prosthesis_Anat_Size ~ group, data = Prosthesis_Anat_Size_compare)
# Связь между Prosthesis_Anat_Size и Pre_LVOT
ggscatterstats(
data = df2,
x = Prosthesis_Anat_Size,
y = Pre_LVOT,
title = "Correlation between anatomic and echocardiographic dimensions of the aortic valve before impingement",
xlab = "Anatomical valve diameter during surgery (mm)",
ylab = "EchoCG valve diameter (LVOT) before surgery (mm)",
# legend.title = "group",
ggtheme = theme_minimal()
)
ggscatterstats(
data = MissRander_df3,
x = Prosthesis_Anat_Size,
y = Pre_LVOT,
title = "Correlation between anatomic and echocardiographic dimensions of the aortic valve before impingement",
xlab = "Anatomical valve diameter during surgery (mm)",
ylab = "EchoCG valve diameter (LVOT) before surgery (mm)",
# legend.title = "group",
ggtheme = theme_minimal()
)
# Dencyty plot for Prosthesis_Anat_Size (original) and MissRander_df3 (imputet). Multvariate imputation.
ggplot(data = Prosthesis_Anat_Size_compare, aes(Prosthesis_Anat_Size, color = group)) +
geom_density() +
scale_color_brewer(palette="Set2") +
xlab("Anatomic size of the aortic valve") +
theme_minimal() +
theme(legend.position = "top", legend.title = element_blank())
# Dencyty plot for Prosthesis_Anat_Size (original) and MissRander_df31 (imputet). Univariate imputation.
ggplot(data = Prosthesis_Anat_Size_compare31, aes(Prosthesis_Anat_Size, color = group)) +
geom_density() +
theme_minimal()
```
# Combine imputation and original data
```{r}
MissRander_df3_merge <- MissRander_df3
MissRander_df3_merge %>%
select(Prosthesis_Size, Prosthesis_Anat_Size, Upsizing, STS, Pre_LVOT) %>%
plot_na_pareto()
# If value in column Prosthesis_Anat_Size is less value Prosthesis_Size, then put value 1 in column Upsizing, else put value 0.
MissRander_df3_merge$Upsizing <- ifelse(MissRander_df3_merge$Prosthesis_Size > MissRander_df3_merge$Prosthesis_Anat_Size, 1, 0)
# MissRander_df3_merge$Upsizing as factor
MissRander_df3_merge$Upsizing <- as.factor(MissRander_df3_merge$Upsizing)
df1_merg <- df1
df1_merg %>%
select(Prosthesis_Size, Prosthesis_Anat_Size, Upsizing, STS, Pre_LVOT) %>%
plot_na_pareto()
# Merge MissRander_df3_merge and df1_merg in new data frame df_imput. Use full_join function
# If value in column Case_Num is equal, then keep row from MissRander_df3_merge. Keep other rows from df1_merg.
df_imput <- full_join(MissRander_df3_merge, df1_merg)
# Delete row if duplicate value in column Case_Num and Prosthesis_Anat_Size is NA
df_imput <- df_imput %>%
dplyr::filter(!(duplicated(Case_Num)))
# How many rows duplicate in df_imput
df_imput %>%
unique() %>%
nrow()
df_imput %>%
select(Prosthesis_Size, Prosthesis_Anat_Size, Upsizing, STS, Pre_LVOT) %>%
plot_na_pareto()
df_imput %>%
select(Prosthesis_Size, Prosthesis_Anat_Size, Upsizing, STS, Pre_LVOT) %>%
plot_na_intersect()
```
# Save data frane with imputation
```{r}
write.csv(df_imput, "data/interim/df_imput.csv", row.names = FALSE)
```