meta data on infert data set

They appear to be technical terms relevant to fertility. You should probably ask someone with a background in medicine... or Google for these terms in conjunction with the word "fertility".
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Sent from my phone. Please excuse my brevity.

Hi,



I wanted to know what the following columns mean in the "infert"
dataset:



parity  count
matched set number  1-83
stratum number  1-63



Thank you,

Fayez

Urbana, IL, USA

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