Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
efficacy for
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'efficacy for' would be correct and usable in written English.
You can use this phrase to describe the effectiveness of something. For example, "The efficacy for the new medication was promising."
✓ Grammatically correct
Science
Academia
News & Media
Alternative expressions(7)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
46 human-written examples
Insecticide use guidelines / selection for OBLR management with varying degree of efficacy for CM control.
Academia
Treatment efficacy for adults with oropharyngeal dysphagia.
Science & Research
Insecticide efficacy for BMSB mgt. in NYS.
Academia
It has 84% efficacy for heterosexual men and women and 70% efficacy for people who inject drugs.
News & Media
Insecticide tools with various degrees of efficacy for BMSB management.
Academia
Kim, N. et al. Cardiac glycosides display selective efficacy for STK11 mutant lung cancer.
Science & Research
Human-verified similar examples from authoritative sources
Similar Expressions
14 human-written examples
We also measured participants' self-efficacy for mobile devices.
These factors are: Self-Efficacy for self-appraisal, Self-Efficacy for Gathering Occupational Information, Self-Efficacy for Professional Practical Information Search and Self-Efficacy for Future Planning, in addition to a general score.
HIV knowledge was the most important predictor of self-efficacy for HIV prevention.
Academia
Employment was not a significant predictor of self-efficacy for HIV prevention.
Academia
Self-efficacy for arthritis pain: relationship to perception of thermal laboratory pain stimuli.
Academia
Expert writing Tips
Best practice
When discussing the effectiveness of interventions or treatments, use "efficacy for" to clearly specify the target or condition being addressed. For instance, "The drug's efficacy for reducing symptoms was significant."
Common error
Avoid using "efficacy for" when simpler terms like "effectiveness" or "suitability" would suffice. "Efficacy" is most appropriate when discussing treatments or interventions in scientific or medical contexts.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "efficacy for" functions as a prepositional phrase, typically modifying a noun or verb phrase to specify the target or area in which something is effective. It describes the capacity or power to produce a desired effect in relation to a specific purpose, condition, or treatment. As Ludwig AI confirms, the usage is grammatically sound.
Frequent in
Science
40%
Academia
35%
News & Media
15%
Less common in
Formal & Business
5%
Encyclopedias
3%
Wiki
2%
Ludwig's WRAP-UP
The phrase "efficacy for" is a prepositional phrase used to describe how effective something is for a specific purpose or condition. Ludwig AI confirms that this phrase is grammatically correct and suitable for use in written English. As demonstrated by numerous examples, it is most frequently found in scientific, academic, and medical contexts, where precise language is necessary to convey the effectiveness of interventions or treatments. While alternatives like "effectiveness in" or "suitability for" may sometimes be appropriate, "efficacy for" is particularly useful in research and clinical settings. Remember that 'efficacy' refers to results obtained under controlled conditions, which differ from real world usage, where 'effectiveness' should be preferred. Avoid overusing this phrase in general contexts where simpler terms could be used.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
effectiveness in
Focuses on the degree to which something is successful in producing a desired result within a particular context.
effectiveness at
Similar to "effectiveness in", but uses a different preposition.
suitability for
Emphasizes the appropriateness of something for a specific purpose or situation.
capability for
Highlights the inherent ability or capacity of something to achieve a particular outcome.
potency for
Refers to the strength or power of something in achieving a specific effect.
aptitude for
Implies a natural talent or inclination toward a particular task or purpose.
value in
Highlights the usefulness or benefit of something in a given context.
usefulness for
Focuses on the practical application and utility of something.
impact on
Focuses on the influence or effect something has on a specific area or subject.
performance in
Relates to how well something executes its intended function within a given scenario.
FAQs
How is "efficacy for" used in a sentence?
Use "efficacy for" to describe how effective something is for a specific purpose or condition. For example, "The vaccine demonstrated high "efficacy for" preventing the disease".
What are some alternatives to "efficacy for"?
Depending on the context, you could use alternatives such as "effectiveness in", "suitability for", or "potency for".
When is it appropriate to use "efficacy for"?
"Efficacy for" is particularly appropriate in scientific and medical contexts when discussing the ability of a treatment or intervention to produce a desired effect under ideal conditions. It's closely related to effectiveness but has a more specific, often clinical, connotation.
What is the difference between "efficacy for" and "effectiveness for"?
While the terms are often used interchangeably, "efficacy" typically refers to the performance of an intervention under controlled, ideal conditions, whereas "effectiveness" refers to its performance in real-world conditions. "Efficacy for" is thus often used in research settings.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested