battenr

# Title: Estimating variance with PS-based methods

# Description: Demonstrating two different ways to estimate variance 
# after using PS-based methods. 

# Setup ----

library(tidyverse) # ol faithful 
library(broom) # tidying the model results
library(sandwich) # for robust variance estimator 

battenr

# Title: Diagnostic Plots for Logistic Regression 

# Description: These diagnostic plots are recommended for logistic regression in 
# Hosmer & Lemeshow. Creating this code to show how to make them in R. 

# Setup ----

#... Libraries ----

library(tidyverse) # ol faithful

battenr

# Title: Parametric G-Formula vs IPTW 

# Description: Comparing results from parametric g-formula to results from IPTW. 
# These methods model different things. The parametric g-formula models the outcome 
# while IPTW models the treatment. The goal of this code is to show how they differ, 
# but are not drastically different (in this example with minimal model misspecification). 

# Setup ----

library(tidyverse) # ol faithful 

battenr

# Title: IPCW for KM Curves 

# Description: Demonstrating using inverse probability of censoring weighting for 
# Kaplan-Meier Curves. 

# Setup ----

#... Libraries ----

library(tidyverse) # ol faithful

battenr

# Title: Variable Selection Based on P-Values vs DAGs 

# Description: The purpose of this code is to show how variable selection 
# based on p-values can lead to more biased results than using DAGs. 

# Setup ----

library(tidyverse) # ol faithful

# Simulating Data ----

battenr

# Title: Checking the Proportional Hazards Assumption 

# Description: Two ways to test the proportional hazards assumption from a Cox 
# PH model. One is the Grambsch-Therneau test, while another is plotting the 
# Schoenfeld residuals over time. Other methods will be for future posts

# Setup ----

#... Libraries ----

battenr

# Title: Bootstrapping 

# Description: Showing what bootstrapping is and how it can be useful. 

# Setup ----

#... Libraries ----

library(tidyverse) # ol' faithful
library(tidymodels) 

battenr

# Title: Stabilized vs Nonstabilized Weights 

# Description: Showing stabilized vs nonstabilized weights using a density plot. 

# Setup ----

#... Libraries ----

library(tidyverse) # ol' faithful
library(broom) # cleaning model outputs

battenr

# Title: Multiple Imputation 

# Description: Showing very, very briefly how multiple imputation works. This was inspired by the 
# section on multiple imputation in Flexible Imputation of Missing Data by Stef van Buuren. 

# Setup ----

#... Libraries ---- 

library(tidyverse) # ol' faithful

battenr

# Title: Checking the Proportional Hazards Assumption using Log-Log Plot

# Description: Showing how to check the PH assumption using the log-log plot. 

# Setup ----

#... Libraries ----

library(tidyverse) # ol' faithful
library(simsurv) # for simulating survival (TTE) data