[R] Conditional Logistic Regression with Multilevel Data [using clogistic() in Epi and lmer() in lme4???]

[Abby Spurdle]

> an aggregate analysis (of all aggregated sites) in a way that accounts
for clustering

I'm not familiar with this topic.
For the benefit of those of us (like me), who are not experts on
conditional logistic regression, what does the above statement mean?

Hopefully, someone who is more familiar with this topic, can help you more.

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