which data type for cox proportional hazards which data model should be used in a cox analysis what is the best model to use with paired data which cox model should i use for cox proportional hazards paired data? what type of data is used in cox ph can you use strata or strata cluster model in proportional hazards when using paired data which model is used to model cox proportional hazards what type of data is used to model cox proportional hazards which of the following model should i be using for cox proportional hazards with paired data? which model should I use for cox proportional hazards? what model should you use to test paired data which model to use for cox proportional hazards ___________ models are needed to model paired data. which model should i use when modeling cox proportional hazards paired data which model do i use to describe a cox proportional hazards when using cox proportional hazards which cox model should i use in my ph analysis cox proportional hazards what is the optimal model for cox proportional hazards why use paired data and cox proportional hazards