an equal duration

USAGE SUMMARY

The phrase "an equal duration" is correct and usable in written English.
It can be used when discussing time periods that are the same length or amount. Example: "The two events will take place over an equal duration of three hours."

✓ Grammatically correct

Science

Academia

News & Media

Human-verified examples from authoritative sources

Exact Expressions

6 human-written examples

Subjects with microalbuminuria exhibited moderate increases in glomerular and mesangial volume when compared with those with early diabetes, but could not be distinguished from subjects who remained normoalbuminuric after an equal duration of diabetes.

Stanford University

Compliance - We checked whether participants in intervention and control groups complied with their drug regimen over an equal duration.

Cochrane Database of Systematic Reviews

Apart from this, an hour of practicing yoga postures increased the levels of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) compared to an equal duration of time spent reading [ 33].

BMC Psychiatry

In a separate study, practitioners of a moving meditation called cyclic meditation were assessed on two separate days, practicing cyclic meditation or an equal duration of supine rest for comparison [ 43].

BioMed Research International

Thus, all controls were alive, not previously diagnosed as having acute kidney injury, registered with their general practice when matched to a given case, and had an equal duration of follow-up at the risk set date.

British Medical Journal

On the other half of the trials (target-absent trials), the target display was replaced either with an instance of the masking pattern (on forward-masking trials) or with a white screen (on backward-masking trials) for an equal duration (71 ms).

Attention, Perception & Psychophysics

Human-verified similar examples from authoritative sources

Similar Expressions

54 human-written examples

To be applied, formula [1] requires one of two conditions to be present: (a) equal duration of "before" periods and equal duration of "after" periods for the treatment site and the comparison group; or (b) equal duration of "before" and "after" periods for the treatment site and the same for the comparison group.

European Transport Research Review

A recently completed study compared concreteness training vs. an equal-duration bogus training condition matched for rationale, vs. a waiting-list control condition in a dysphoric sample (Watkins, Baeyens, & Read, in press).

Behaviour Research and Therapy

Alternatively, CNT could be compared with an equal-duration bogus training condition, matched for rationale and duration but lacking its active ingredients, to unpack the contribution of shared non-specific factors.

Behaviour Research and Therapy

This was followed by a stay of equal duration in the camp at Los Banos.

University of California, Berkeley

Time in the simulation progressed in discrete iterations corresponding to the four seasons in a year of equal duration i.e. three months.

BMC Veterinary Research

Expert writing Tips

Best practice

When comparing the effectiveness of different treatments or interventions, ensure that the observation or application periods are of "an equal duration" to avoid skewed results.

Common error

Avoid assuming that because two events occurred over "an equal duration", one caused the other. Correlation does not equal causation; further analysis is needed to establish a causal link.

Linguistic Context

The phrase "an equal duration" primarily functions as an adjective phrase modifying a noun. Ludwig confirms its grammatical correctness and usability in describing time periods of the same length. Examples from Ludwig illustrate its use in scientific studies and general comparisons.

Expression frequency: Uncommon

Frequent in

Science

66%

Academia

16%

News & Media

8%

Less common in

Encyclopedias

4%

Wiki

2%

Formal & Business

2%

Ludwig's WRAP-UP

In summary, the phrase "an equal duration" is a grammatically correct and usable English expression, as affirmed by Ludwig. It is most commonly used in scientific, academic and news contexts to specify that two or more time periods are of equivalent length. While not extremely frequent, it provides a precise way to ensure fairness and comparability in various analyses and descriptions. When opting for an alternative, consider the context and desired level of formality. For instance, "same amount of time" may work better in informal conversation.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

same amount of time

Replaces "duration" with the more general term "time" and uses "amount" to emphasize quantity.

equivalent period

Substitutes "equal" with "equivalent" and "duration" with "period", maintaining the same meaning.

identical time frame

Uses "identical" to stress the sameness and "time frame" to specify a period.

matching time span

Employs "matching" to indicate similarity and "time span" to refer to the interval.

same length of time

Replaces "duration" with a more descriptive phrase "length of time".

comparable time

Uses "comparable" suggesting similarity though possibly not exact equivalence.

corresponding time

Indicates a parallel or related time, implying a connection or matching context.

a like duration

Uses "like" as a synonym for equal, offering a slightly more informal tone.

equivalent time interval

Replaces duration with time interval, stressing the start and end point of the time.

a similar time period

Suggests approximation rather than exact equality using "similar".

FAQs

How can I use "an equal duration" in a sentence?

You can use "an equal duration" to describe activities or events that last the same amount of time. For example: "The participants engaged in physical exercise and meditation for "an equal duration" of 30 minutes each".

What is a good alternative to "an equal duration"?

Alternatives to "an equal duration" include "same amount of time", "equivalent period", or "identical time frame" depending on the context.

Is it more formal to say "an equal duration" or "the same amount of time"?

"An equal duration" is slightly more formal than "the same amount of time". The choice depends on the context. Use "an equal duration" in scientific or academic writing. For general conversation, use "the same amount of time".

Which is correct: "equal duration" or "an equal duration"?

Both phrases are grammatically correct, but "an equal duration" is preferable when referring to a singular, unspecified duration. "Equal duration" is fine when speaking in generalities or as an adjective (e.g. equal duration segments).