"degrees of efficacy" is a correct and usable phrase in written English.
It is used to describe the varying levels or amounts of effectiveness of something. Example: "The new medication has been found to have varying degrees of efficacy in treating different types of illnesses."
Findings of studies conducted with the tricyclic antidepressants (TCAs), monoamine oxidase inhibitors (MAOIs), mood stabilizers, and benzodiazepines suggest varying degrees of efficacy, with the MAOIs being particularly efficacious.
Insecticide tools with various degrees of efficacy for BMSB management.
Although there is some debate surrounding the varying degrees of efficacy of second-generation antihistamines, it is known that some agents may produce varying levels of drowsiness or impairment, especially at higher than recommended doses.
Instead, it is precisely the varied modes of participation in small-, medium-, and large-scale conversations, with varied but sustained degrees of efficacy, that make the public sphere of the networked environment different, and more attractive, than was the mass-media-based public sphere.
These preliminary findings suggest that atenolol and enalapril have comparable degrees of efficacy and safety, with no major disparities in quality-of-life effects, for hypertensive patients with a history of taking diuretics and this sort of quality-of-life assessment can be performed during trials of antihypertensive drugs.
People have to ride it out on cocktails with middling degrees of efficacy.
Insecticide use guidelines / selection for OBLR management with varying degree of efficacy for CM control.
Several of these compounds have already displayed some degree of efficacy as chemotherapeutic agents in vitro and in vivo.
To establish the degree of efficacy of bemiparin treatment over 3 months in the improvement of slowresponding ulcers in diabetic foot.
Serial refinements permitted Colin MacLeod and Michael Heidelberger to conduct a 1944-45 clinical trial of quadrivalent pneumococcal polysaccharide vaccine (PPV), demonstrating a high degree of efficacy in soldiers against pneumococcal pneumonia.
He told the conference that a cure was "way upstream" and depends on future research breakthroughs, and he called the most successful vaccine trial to date "humbling" because it showed only a modest degree of efficacy.
