why is it necessary to bootstrap patient observation data what is mhr used for which level should you bootstrap for a survival model? should i bootstrap data in clusters when do you bootstrap a survival model what is the purpose of bootstrap when to bootstrap patient observation what is max hazard ratio in a survival model why use the bootstrap method why bootstrap for patients which is more appropriate for cluster or individual clusters what level of data is a survival model should i bootstrap a survival model when is a survival model bootstrap useful when resampling a survival model, how to use mhr where is the mhr data stored in stcox which stata is used to bootstrap a model of random effect should i bootstrap the patient data why bootstrap patient data should you bootstrap at the individual level