decline in efficacy

USAGE SUMMARY

The phrase "decline in efficacy" is correct and usable in written English.
It can be used when discussing a reduction in the effectiveness or performance of something, such as a treatment, product, or process. Example: "The study revealed a significant decline in efficacy of the vaccine over time."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

17 human-written examples

For all herbicides used there was a significant decline in efficacy with increases in tree height.

New Zealand Journal of Forestry Science

The authors were also able to corroborate the relationship between the decline in efficacy and reduced mRNA levels with plants grown in contention.

Environmental Sciences Europe

Prospective buyers might be concerned about an EV's suitability for their lifestyles and about the new technology of the car's expensive battery pack, which will decline in efficacy over time.

Forbes

This decline in efficacy is not expressed as a decline in performance unless rehearsal on the VDT is extensive.

Plosone

This contrasts with the theory that the extensively cultivated BCG daughter strains are over-attenuated although both theories attempt to explain the apparent decline in efficacy of BCG against pulmonary TB during decades of cultivation in vitro [32], [33].

Plosone

Based on results from other studies we assume no decline in efficacy from the dose reduction [ 35, 36].

BMC Infectious Diseases

Human-verified similar examples from authoritative sources

Similar Expressions

43 human-written examples

Marketing is in ferment as traditional advertising declines in efficacy.

Harvard Business Review

In addition, some treatment regimens unchanged for decades might be declining in efficacy because of drug resistance.

British Medical Journal

However, a decline in vaccine efficacy was observed over the 5-y follow-up, particularly for vaccine efficacy against HZ.

Human Vaccines and Immunotherapeutics

Figure 1, which presents the ANES Trust in Government and External Efficacy Indices from 1958-2012, illusthetes the broader trend of declining trust and the corresponding decline in external efficacy (the belief that individuals can influence government).

Huffington Post

AhR−/− mice inherently suffer from variety of organ disorders including a decline in the efficacy of their immune system and high sensitivity to inflammatory stimuli52.

Nature

Expert writing Tips

Best practice

When discussing treatments or interventions, specify the factors contributing to the "decline in efficacy", such as drug resistance or changes in patient physiology.

Common error

Avoid attributing the "decline in efficacy" to a single cause without sufficient evidence. Acknowledge that multiple factors may be involved and be specific in your analysis.

Linguistic Context

The phrase "decline in efficacy" functions as a noun phrase, typically serving as the subject or object of a sentence. Ludwig examples show it describing a reduction in the effectiveness of treatments, products, or processes. According to Ludwig AI, the phrase is grammatically correct and usable in written English.

Expression frequency: Common

Frequent in

Science

70%

News & Media

15%

Formal & Business

15%

Less common in

Encyclopedias

0%

Wiki

0%

Social Media

0%

Ludwig's WRAP-UP

In summary, "decline in efficacy" is a grammatically sound phrase commonly used to describe a reduction in effectiveness or performance, particularly in scientific and technical fields. Ludwig's analysis indicates that it serves as a noun phrase, often appearing in formal contexts such as academic papers and reports. The phrase is versatile, applicable to treatments, products, or processes where a decrease in performance is observed. According to Ludwig AI, the phrase is deemed grammatically correct and perfectly usable in written English. While alternatives like "decrease in effectiveness" or "waning effectiveness" exist, the specific choice depends on the desired nuance and context.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

decrease in effectiveness

Replaces "decline" with "decrease" and "efficacy" with "effectiveness", maintaining a similar meaning.

reduced effectiveness

Simplifies the phrase to a more direct statement of reduced effectiveness.

reduction in potency

Substitutes "efficacy" with "potency", emphasizing the strength or power of something.

waning effectiveness

Uses "waning" to suggest a gradual decrease in effectiveness over time.

loss of effectiveness

Focuses on the complete loss of effectiveness, rather than a gradual decline.

diminished effectiveness

Emphasizes a reduction in effectiveness, suggesting it's less potent than before.

impaired effectiveness

Highlights that the effectiveness is damaged or weakened.

weakening effect

Shifts the focus to the effect itself, describing it as weakening.

erosion of effectiveness

Uses "erosion" to convey a gradual wearing away of effectiveness.

reduced performance

Generalizes the concept to any kind of performance, not just efficacy.

FAQs

How can I use "decline in efficacy" in a sentence?

You can use "decline in efficacy" to describe a reduction in the effectiveness of something over time. For example, "The study showed a "decline in efficacy" of the vaccine after five years."

What are some alternatives to "decline in efficacy"?

Alternatives include "decrease in effectiveness", "reduction in potency", or "waning effectiveness", depending on the specific context.

Is it better to say "decline in efficacy" or "decrease in efficacy"?

Both "decline in efficacy" and "decrease in efficacy" are grammatically correct and have similar meanings. The choice depends on personal preference and the desired tone.

What factors might cause a "decline in efficacy"?

A "decline in efficacy" can be caused by factors such as drug resistance, changes in the target population, or degradation of the product over time.