How is follow up calculated? If it is calculated as the time between the randomization and last survival follow up, it would correspond to overall survival, so I do not know how to measure it.
https://www.researchgate.net/post/How_to_calculate_the_median_follow_up_period_of_a_certain_treatment_study
https://www.graphpad.com/guides/prism/latest/statistics/stat_determining_the_median_followu.htm
https://en.wikipedia.org/wiki/Median_follow-up
Article Median follow-up in clinical trials
The definition of "median follow-up period" varies depending on the study's purpose. It can refer to the time since a patient's entry into the study, randomization, first treatment, or hospital discharge. The median is the duration that splits the study population into two equal halves. The accuracy and reliability of the median follow-up period are influenced by various factors, requiring careful consideration when interpreting study results Valeria Merz
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