Recently Published
Plot restricted cubic spline
A study note
Convert a string to a variable name in R function
Convert a string to a variable name in R function
Linear mixed models for repeated measurements in clinical trials
A detailed explanation of the linear mixed model for clinical trials
Regression analysis for cluster data
Use SAS, R and STATA to analyse clustered data.
Delta method for predictive models
Using delta method to calculate 95% confidence interval of predicted values
Weighted Least Square Regression
A not for Weighted Least Square Regression
Multiplicative random effect model of meta-analysis
Just another note.
Confidence interval for ratios
Just a note
Rstudio blank GUI
Just a note
Clumping
Just a note for clumping
A SAS macro to change all variable names in a dataset.
A SAS macro to change all variable names in a dataset.
A note on competing risks in survival data analysis
Competing risk analysis in survival analysis using SAS and R
Simulating survival data with competing risk
Just a note
Kolmogorov differential equations
Just a note
Newton Raphson and Fisher Scoring
The difference between Newton Raphson and Fisher scoring.
SIR with vaccination
A SIR model with vaccination
MSEIR
This is a note for the MSEIR dynamic system
Runge-Kutta Method
A simple note for Runge-Kutta Method (RK4) method
Solving Differential Equations in R: Package deSolve
deSolve package
Wall plug, drill size and screw size
Wall plug, drill size and screw size
Center of a Taylor Series
A review of center of a Taylor Series
A detailed review on Iterative re-weighted least squares (IRLS) methods
A method review on the IRLS
Product rule of differentiation
Product rule of differentiation
Variance of mixture normal distributions
Calculate the variance of mixture normals
Random effect meta-analysis
Calculation method for random effect meta-analysis
R code for BLUP of the mixed model
The code is for the example from the paper 'That BLUP Is a Good Thing: The Estimation of Random Effects'
Robinson, George K. "That Blup Is a Good Thing: The Estimation of Random Effects." Statistical science 6, no. 1 (1991): 15-32.