However, the smaller north/south-ESAIM sets showed somewhat broader confidence limits (e.g. 384 north/south ESAIM set showed maximum CI = 38.9% and a median CI = 17.1%. However, these differences are unlikely to affect most studies. The larger number of north/south-ESAIMs may be useful if a very homogeneous set of individuals of a particular ethnic group is desired for a specific study.
