The phrase "altering effectiveness" is correct and usable in written English.
It can be used when discussing changes that impact the efficiency or performance of a process, method, or system.
Example: "The new policy is aimed at altering effectiveness in our workflow to improve productivity."
Alternatives: "changing efficiency" or "modifying performance".
Several studies report that the resistant virus spontaneously reverts to a wide-type genotype by one year [ 14, 26], meaning that the resistance would not have altered effectiveness of prevention in further pregnancies.
Some drugs interact with one another, altering their effectiveness and even resulting in harmful side effects.
Some medications interact with certain food or drink, altering their effectiveness or even causing food-poisoning or more severe side effects.
If present with DPB, the human T-lymphotropic virus, type I, a retrovirus, modifies DPB pathogenesis by infecting T helper cells and altering their effectiveness in recognizing the presence of known or unknown pathogens involved with DPB.
Second, the different delivery methods used may have resulted in varying concentrations of surfactant reaching the damaged alveoli and altering the effectiveness of therapy.
We have investigated whether polyethylene glycol (PEG) modification can reduce the immunogenicity of our galactosylated streptavidin (gal-streptavidin) clearing agent without altering its effectiveness as a clearing agent.
Note that one way in which these host characteristics may contribute to variability is by altering the effectiveness of physiological control mechanisms at individual events in the pathway.
According to the theories of TCM, the main purposes of herb processing are to increase potency, reduce toxicity, and alter the effectiveness of the raw materials.
Women and men also have different skillsets and areas of expertise which, if utilised correctly, can alter the effectiveness of humanitarian responses and overall community resilience.
"This novel insight points to broader norms, market failures or institutional constraints that alter the effectiveness of these resources for women," the report says.
