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
duration of concern
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "duration of concern" is correct and usable in written English.
It can be used to refer to the length of time that a particular issue or situation is being considered or worried about. Example: "The duration of concern regarding the environmental impact of the project has led to increased scrutiny from the community."
✓ Grammatically correct
Science
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
1 human-written examples
Duration of concern On the basis of the concern score in the diary, we will calculate the duration of the concern.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Suboptimal compliance with traditional TB preventative therapy has been attributed to various factors, including duration of therapy, concerns about drug toxicity, and pill burden [ 4].
Science
The compliance in the training and combi (full compliance 28%) groups only accounted for the duration of the concerning intervention, eg, 2 months, whereas the brace group (full compliance 23%) had to be compliant for the whole 12 months of ankle brace prescription.
However, no consensus has been reached concerning the duration of cancer induction.
Science
All data concerning dose of medication and duration of mechanical ventilation concern cumulative data from admission to the ICU up to the time of measurement.
Science
Patients were heterogeneous concerning the duration of the disease and concerning the kind of medication they overused (Table 2).
It is the "the duration of administration" which concerns the impact on the ease of use of the treatment.
Epidemiologic studies suggest a temporal trend of earlier onset and longer duration of puberty, raising concerns regarding the potential impact of environmental factors on pubertal development.
At the time of presentation, the child's moribund state, the extreme degree and unknown duration of hyponatraemia prompted concerns regarding acute onset hyponatraemia with impending brain oedema and associated risk of encephalopathy and respiratory arrest [ 27].
Science
The lower likelihood of good blood glucose control of patients treated by primary care physicians with respect to those treated by endocrinologists, despite having a shorter duration of diabetes, raises a concern, because the majority of Type 2 diabetes care is delivered at the primary care level.
Science
Conclusions: Earlier identification of deafness (by universal neonatal hearing screening programs) may reduce age at implantation and duration of deafness as areas of concern in the future.
Expert writing Tips
Best practice
When using the phrase "duration of concern", clearly specify what the concern pertains to. Providing context ensures clarity and avoids ambiguity. For example, "The duration of concern regarding the new policy is increasing."
Common error
Avoid using "duration of concern" without explicitly stating what the concern is. For instance, instead of saying "The duration of concern was significant", specify "The duration of concern regarding the environmental impact was significant".
Source & Trust
83%
Authority and reliability
4.2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "duration of concern" functions as a noun phrase, specifying a period during which worry or apprehension is felt. As Ludwig AI explains, it denotes the length of time that an issue is being considered or worried about. The Examples show it primarily used in scientific and medical contexts.
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "duration of concern" is a grammatically sound noun phrase used to describe the length of time a particular concern persists. Ludwig AI confirms its usability in written English. While relatively rare, it finds its primary application in scientific and medical contexts. For enhanced clarity, specify the subject of the concern. Alternatives such as "period of worry" or "length of apprehension" may suit different contexts. The phrase carries a formal register, making it appropriate for academic and professional discourse.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
period of worry
Replaces "concern" with a more direct synonym, focusing on the emotional aspect of worry.
length of apprehension
Substitutes "concern" with "apprehension", highlighting a sense of unease or fear regarding something.
timeframe of anxiety
Uses "anxiety" instead of "concern", emphasizing a more intense emotional state.
extent of preoccupation
Replaces "concern" with "preoccupation", suggesting a state of being absorbed in thought about something.
duration of misgiving
Employs "misgiving", implying a feeling of doubt or apprehension about the outcome or consequences of something.
time spent worrying
Simplifies the phrase, focusing directly on the act of worrying and its duration.
period of observation
Shifts the focus to observation, implying monitoring something for a specific length of time due to concern.
length of monitoring
Emphasizes the act of monitoring something and its duration, suggesting a proactive approach to a concern.
time under consideration
Focuses on the time during which something is being thought about or debated, due to a concern.
length of deliberation
Highlights the process of carefully considering something, implying a thoughtful approach to a concern.
FAQs
How can I use "duration of concern" in a sentence?
You can use "duration of concern" to indicate the length of time a specific worry or issue is considered important. For example: "The "duration of concern" about the side effects led to further research."
What are some alternatives to "duration of concern"?
Alternatives include "period of worry", "length of apprehension", or "timeframe of anxiety", depending on the specific context and the emotional intensity you want to convey.
Is "duration of concern" formal or informal?
"Duration of concern" is relatively formal and is suitable for academic, scientific, or professional writing. More informal contexts might benefit from simpler phrasing like "how long we were worried".
What's the difference between "duration of concern" and "level of concern"?
"Duration of concern" refers to the length of time a concern exists, while "level of concern" refers to the intensity or degree of worry or importance attached to an issue.
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
83%
Authority and reliability
4.2/5
Expert rating
Real-world application tested