lack of efficacy

USAGE SUMMARY

"lack of efficacy" is a correct and usable phrase in written English.
You can use it to describe something that fails to have the desired effect, usually due to an inadequate level of quality or strength. For example, "The project was unsuccessful due to the lack of efficacy of the chosen materials."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Another 2015 review cites "inconsistent/weak evidence" for flossing and a "lack of efficacy".

The Guardian

Aviv's article highlights the lack of efficacy of opioids in treating non-cancer chronic pain.

The New Yorker

Dr. Okarma of Geron emphasized that the purpose of the first trial was safety, so that lack of efficacy should not be a problem.

The New York Times

Lack of efficacy on current treatment.

The Journal of Headache and Pain

Despite its creation more than 15 years ago, banner ads have been surprisingly resilient despite their lack of efficacy.

TechCrunch

Antonaci et al. [31] reported a lack of efficacy of sumatriptan in 7 patients.

The Journal of Headache and Pain

Adverse effects were minor, with only 1 patient discontinuing treatment because of lack of efficacy.

Clinical and Translational Medicine

The lack of efficacy and unfavourable safety profiles contribute the most to high attrition rates.

Journal of Cheminformatics

The reasons for treatment discontinuation were lack of efficacy and side effects in an equal proportion.

The Journal of Headache and Pain

One patient discontinued after reaching 3,600 mg a day due to lack of efficacy.

The Journal of Headache and Pain

Recent data have demonstrated the lack of efficacy of BBA and a fierce discussion has ensued.

Journal of Pediatric Urology

Expert writing Tips

Best practice

When discussing research findings, clearly state the "lack of efficacy" and provide supporting data or reasons for the observed ineffectiveness.

Common error

Avoid making broad generalizations about a "lack of efficacy" based on limited data. Qualify your statements by specifying the conditions or contexts in which the ineffectiveness was observed.

Linguistic Context

The phrase "lack of efficacy" functions as a noun phrase, typically serving as the subject or object of a sentence. As Ludwig AI confirms, it describes the state of something not producing the desired effect. It's commonly used to express the absence of a positive outcome.

Expression frequency: Very common

Frequent in

Science

65%

News & Media

25%

Formal & Business

10%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "lack of efficacy" is a noun phrase used to describe the state of something failing to produce the desired effect. Ludwig AI confirms that this phrase is correct and suitable for formal writing, particularly in scientific and technical contexts. It is commonly used to report the failure of a treatment or intervention to achieve its intended outcome. While alternatives such as "ineffectiveness" exist, "lack of efficacy" provides a more precise and formal way to express this concept. When using this phrase, ensure you provide supporting evidence and avoid overgeneralizations, as this will contribute to more effective communication.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

inefficacy

A direct synonym emphasizing the lack of power to produce the desired effect.

no effect

Directly states the absence of any impact or result.

ineffectiveness

This term directly refers to the state of not producing the desired effect.

failure to work

This phrase indicates a complete absence of the intended function.

inability to deliver results

This emphasizes the absence of positive outcomes or accomplishments.

absence of impact

This highlights the lack of influence or effect on a situation.

poor performance

This focuses on the substandard execution or operation.

fruitlessness

This suggests that efforts yield no valuable outcomes.

futility

This highlights the pointlessness or ineffectiveness of an action.

unproductiveness

This indicates the inability to generate useful results or output.

FAQs

How can I use "lack of efficacy" in a sentence?

You can use "lack of efficacy" to describe situations where an intervention or treatment fails to produce the desired result. For example: "The study revealed a "lack of efficacy" of the drug in treating the condition."

What are some alternatives to "lack of efficacy"?

Alternatives include "ineffectiveness", "failure to work", or "inability to deliver results", depending on the specific context.

Is it better to say "lack of efficacy" or "ineffectiveness"?

Both "lack of efficacy" and "ineffectiveness" are acceptable, but "lack of efficacy" might be preferred in more formal or scientific writing. "Ineffectiveness" is generally more common in everyday language.

What does "lack of efficacy" imply in a clinical trial?

In a clinical trial, "lack of efficacy" suggests that the treatment being tested did not demonstrate a statistically significant benefit compared to a placebo or standard treatment. This can lead to the trial being stopped early or the treatment not being approved for use.