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Cox partial likelihood re-derived as normal equation of GLM

Bypassing risk-set construction and event conditioning arguments

The Cox proportional hazards model is a popular semiparametric regression model in survival analysis. Its partial likelihood offers a clever way to filter out the…

The chance of erring on the same side (CESS): A way to elicit correlation

Useful for power analysis with repeated measurements

Collaborators always come to me for help with power analysis. More often than not, their studies involve repeated measurements—multiple observations per subject over time or…

How to create Bland-Altman analysis for multiple biomarkers

Use group_by() for agreement statistics and facet_wrap() for plots

Bland-Altman analysis is a popular method to assess agreement between two measurement methods. When dealing with multiple biomarkers, it’s essential to analyze each…

How to perform efficient simulations in Tidyverse

Use purrr::map() for element-wise operations

Consider a simulation study for linear regression.