Clinical trial Randomization

General
1

Hi, I need help plz
I'm trying to find a solution to the following problem :

  • I have a data set with 144 patients: containing two groups :
  • group 1 (70 patients) treated with a medical device and,
  • group 2 (42 patients) treated without a medical device.
    I would like to choose randomly from group 1: 42 patients that have the same characteristics as in group 2, in terms of: tumor size, sex, age, and tumor type.
    Could you help me, please?
    thank you
2

You obviously never want to share on an internet forum people's private medical data, but do you have a dummy bit of code for folks to work with? Ideally in the form of a reproducible example (FAQ: What's a reproducible example (`reprex`) and how do I do one?).

Also, do you have a specific method you're looking to implement in R? e.g. propensity score matching or something? Depending on what you're trying to do, there's likely an R package designed to help.

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