Question about coxpsmatch() and exact matching

[skent259]

@pauknemj what would happen in your function when using exact matching with a limited number of pairs?

I see that this section of code grabs the top n_pairs:

if(length(matches$trt.id) > n_pairs) {
    matches <- matches[1:n_pairs,, drop = FALSE]
  }

But will the numbering grab a biased number from a given exact match group? For example, if you had two equal-sized exact match groups and asked for half of the maximum pairs, would it give you pretty much everyone from the first group?

[pauknemj]

I don't think so. They are collectively ordered by distance first.

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________________________________ From: Sean Kent ***@***.***> Sent: Wednesday, May 19, 2021 9:16 PM To: skent259/rsmatch ***@***.***> Cc: MITCHELL JOSEPH PAUKNER ***@***.***>; Mention ***@***.***> Subject: [skent259/rsmatch] Question about `coxpsmatch()` and exact matching (#10) @pauknemj<https://github.com/pauknemj> what would happen in your function when using exact matching with a limited number of pairs? I see that this section of code grabs the top n_pairs: if(length(matches$trt.id) > n_pairs) { matches <- matches[1:n_pairs,, drop = FALSE] } But will the numbering grab a biased number from a given exact match group? For example, if you had two equal-sized exact match groups and asked for half of the maximum pairs, would it give you pretty much everyone from the first group? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub<#10>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ANS6MMQHIKGMMWSXCRH7XBDTORWJLANCNFSM45F32XZA>.