"efficacy results" is a correct and usable phrase in written English.
You could use it in a sentence such as: "The efficacy results of the new medication have been highly promising."
Figure 2: Summary of efficacy results (ITT population).
Secondary efficacy measures confirmed primary efficacy results.
The following resources summarize efficacy results for biocontrol of plant diseases.
We provide updated safety and efficacy results of the BMA117159 trial following an additional 14 months' follow-up.
Up to this point, Gilman had been given access to the safety results of the trials, but he had been "blinded" to the all-important efficacy results.
Efficacy results from clinical trials are expected in 2015.
Butler, J. et al. Intravenous allogeneic mesenchymal stem cells for nonischemic cardiomyopathy: safety and efficacy results of a phase II-A randomized trial.
Efficacy results need to be interpreted with caution.
Advances in this field are required to substantiate the efficacy results.
The efficacy results for each timeline are reported in Table 1.
Analyses run on the PP population confirmed the primary efficacy results.
