The phrase "although the efficacy of" is correct and usable in written English.
It can be used when discussing the effectiveness or performance of a particular method, treatment, or intervention, often in a contrasting context.
Example: "Although the efficacy of the new drug has been questioned, preliminary results show promise."
Alternatives: "despite the effectiveness of" or "even though the performance of".
Surgical resection is effective treatment for patients with these tumours, although the efficacy of surgery decreases with increasing tumour size.
Although the efficacy of DBS is clear, its precise molecular mechanism remains unknown.
The treatment of hydatid cyst ranges from surgical intervention to chemotherapy, although the efficacy of chemotherapy is still unclear.
Although the efficacy of probiotics has been extensively studied in hepatic encephalopathy (HE), the results remain controversial.
Although the efficacy of these training strategies is not clinically proven, adaptive strategies may result in substantial improvements.
Although the efficacy of amitriptyline in pediatric migraine has never been assessed in RCTs, it remains one of the most widely used agents.
Although the efficacy of this procedure is still inconclusive, we believe this is an option for treating diseases attributable to the mechanical vulnerability of the airway.
Recent evidence suggests that topical tranexamic acid administration also is effective, although the efficacy of combined topical and intravenous administration has never been reported.
Although the efficacy of DAPT in the reduction of ischemic events has been well validated, the optimal duration, and indeed combination, of therapy is yet to be established.
Although the efficacy of thoracoamniotic shunting (TAS) for fetal hydrothorax is well-recognized, the coexistence of hydrops fetalis is still a clinical challenge.
Although the efficacy of this agent has been well established in multiple disciplines, several concerns have been raised as to the unique adverse effects of this agent.
