The phrase "affirmed the effectiveness" is correct and usable in written English.
You can use it when discussing the confirmation or validation of something's effectiveness, such as a program, method, or treatment.
Example: "The study affirmed the effectiveness of the new teaching strategy in improving student engagement."
Alternatives: "confirmed the efficacy" or "validated the effectiveness."
Hence, the findings of this study affirmed the effectiveness of the instructional plan based on authors made demotivating factors questionnaire, to improve learners English learning as a second language.
Over the past decade, as groups have become more sophisticated at assessing the impact of their work, and as digital payment systems have advanced throughout the developing world, a number of carefully designed field experiments have affirmed the effectiveness of unconditional cash transfers to the poor.
The generally positive feedback from both students and instructor affirmed the effectiveness of the use of games in the classroom (Shang and Jong 2009).
While some affirmed the effectiveness, even if not emphasizing it, many subtly implied that the drops helped prevent the progression of cataracts.
To affirm the effectiveness and complication rate of postoperative single-dose β-irradiation (RT) with 90Sr in the case of primary pterygium in a clinical trial.
A quasi-experimental design research has been carried out to affirm the effectiveness of this module in test achievement among the students.
The short-lived cyclin D1 was decreased by cycloheximide to below the detection level, affirming the effectiveness of cycloheximide to block protein synthesis.
Finally, outcomes of this real-world claims analysis are consistent with the data demonstrated in key clinical trials, affirming the effectiveness and manageable safety profile of nab-paclitaxel across all lines of therapy in patients with MBC.
"Vladimir Putin gave a high evaluation to the combat units and crews and the work of the Armed Forces General Staff, which fulfilled the tasks before them and affirmed the reliability and effectiveness of Russia's nuclear forces". The exercises included tests of communications systems and "new algorithms" for command and control, it said.
However, they are not sufficient to affirm the games effectiveness.
The experimental results affirm the effectiveness of the proposed method in addressing dynamic multi-objective optimization problems.
