Meaning of this phrase

[kcg]

Hi teachers,
I have been scratching my head to understand what the following phrase means:

"the patients are predominantly indigenous"

Does that mean the patients are pretty much alive? I looked up the words predominantly and indigenous, and I cannot understand what the phrase meant

Any help would be appreciated

[mykwyner]

It means that most of the patients come from families that have lived in the area for many generations.

[kcg]

Arha, mykwyner, thank you very much for the explanation, much appreciated.

[mykwyner]

You are very welcome.