The phrase "a combined efficacy" is correct and usable in written English.
It can be used when discussing the effectiveness of multiple elements working together to achieve a result.
Example: "The study demonstrated a combined efficacy of the two treatments in improving patient outcomes."
Alternatives: "joint effectiveness" or "collective efficacy".
To this end, combined immunity was defined as a measure of the combined efficacy of innate and adaptive immunity.
Drug combinations are synergistic when their combined efficacy exceeds the sum of the individual actions, but they rarely include ineffective drugs that become effective only in combination.
The present study was designed to assess the combined efficacy of morin, a dietary flavanol and non-steroidal anti-inflammatory drug indomethacin against adjuvant-induced arthritis in rats, an experimental model for rheumatoid arthritis.
Pooled analysis of the 2 study results showed a combined vaccine efficacy of 95% with a lower 95% confidence limit of 86.5%.
This laboratory study was designed to examine the compatibility of soil-dwelling predators with microbial biocontrol agents and assess their combined efficacy against pupating WFT, with a view to their integrated use.
CAMS also provided a large-scale examination of the relative and combined efficacy and safety of the best evidenced-based psychosocial (CBT) and pharmacologic (SSRI) treatments to date for the most commonly occurring pediatric anxiety disorders.
Despite the recommendations of an individualised, multimodal treatment approach, no one has yet investigated the combined efficacy of all the recommended non-surgical treatment modalities in a controlled design.
To the best of the author's knowledge, this is one of the best score while considering the "combined efficacy and off target possibility" of siRNA for silencing a gene.
The combined efficacy data provided herein support comparable therapeutic benefit for a single administration of 4 mg/kg liposomal DMX-P and daily administrations of at least 1.6 mg/kg free glucocorticoid.
Although these anchorage systems have shown significant promise when investigated independently, their combined efficacy has not been investigated.
