Is the usage "multiple logistic regression analysis" correct?

I encountered a manuscript where the author writes:

Risk associations for metabolic syndrome and diabetes were analyzed using multiple logistic regression analyses..."

In this case, is the usage regression analyses correct? Isn't the word multiple logistic regression self-sufficient? I felt it was inaccurate to use analyzed twice in the same sentence.

Solution 1:

A correct parsing of this phrase would be:

multiple (Logistic Regression) analyses

Logistic regression is a separate term and is a statistical model. The writer is doing multiple analyses, all of which use logistic regression.

At its core, the sentence is:

Risk associations ... were analyzed using multiple ... analyses

So the associations were analyzed using multiple analyses. This seems grammatically and syntactically correct.