Comparing screening rates

Hi all,

I've been out of school for a bit and am now having anxiety over picking the correct analysis method for a proposal I have to write. I have ideas but I'd love some input from you folks.

It's an intervention study where we'd be introducing a new screening method to practices. I'd have a control group of practices as well.

Basically, I'd want to compare pre/post screening rates, and determine if the intervention improved screening rates as compared to the control group.

Thanks for any help in advance.