Can we say one pooled prevalence is greater than an other pooled value while confidence intervals are overlapping?

16 May 2021 1 9K Report

I am comparing the global prevalence in intestinal carriage of drug resistant E. coli between community and healthcare settings. I found that the global pooled prevalence in feacal ESBL E.coli carriage in healthcare settings as 21.1% ( 95%CI, 19.1-23.2%) while the prevalence in the community was 17.6% (95%CI, 15.3-19.8%). Can we say the prevalence in healthcare settings was higher than in the community? Note, the 95%CI s ovelap!

If not how shall I compare/describe these

two findings?

Zhang Nan

I don’t think it can, because it may exist selection bias.These are 2 samples with different attributes.I suggest you consider DID analysis.

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