Minimum sample size for developing a multivariable prediction model using multinomial logistic regression
145 Citations•2023•
Alexander Pate, Richard D Riley, Gary S. Collins
The sample size criteria was illustrated through a worked example considering the development of a multinomial risk prediction model for tumour type when presented with an ovarian mass and found that it resulted in the desired level of overfitting.
Abstract
We illustrated how to implement the sample size criteria through a worked example considering the development of a multinomial risk prediction model for tumour type when presented with an ovarian mass. Code is provided for the simulation and worked example. We will embed our proposed criteria within the pmsampsize R library and Stata modules.