"Compared with"

"Schizophrenia patients do as well, or perhaps even better, on old
psychiatric drugs compared with newer and far costlier medications"

(Oct 3, 2006 - The Olympian).

Here the writer has compared schizophrenia patients with newer medications. The repair is simple: "Schizophrenia patients do as well, or perhaps even better, on old psychiatric drugs compared with patients taking newer and far costlier medications"