how does survival analysis compare to treatment levels? what is the procedure for the survival analysis in r what is tukie test in survival analysis how to perform contrasts which technique is used to compare survival levels comparing survival levels nsa what test is used to compare two different treatments? can i use tukiy's test to compare survival among two levels which method does contrast testing which r procedure performs a contrast analysis how do i perform survival analysis what is the difference between tukeye and contrast when can we compare two treatment levels in an R when is contrast test used in survival analysis can tukey's test be used in survival analysis when there are more than 2 treatments? how to compare survival levels tukey's analysis what is a comparison procedure in survival analysis how is a survival analysis performed what is tukie test in survival analysis r comparing survival levels