intervals of three months

USAGE SUMMARY

The phrase "intervals of three months" is correct and usable in written English.
It can be used when discussing time periods or schedules that occur every three months. Example: "The project will be reviewed at intervals of three months to assess progress and make necessary adjustments."

✓ Grammatically correct

Science

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

7 human-written examples

He will still answer questions in public four times each year, but the sessions will now be spaced at regular intervals of three months, falling in the final month of each quarter.

The New York Times

In a first model, delta CD4 values were calculated from treatment initiation at intervals of three months.

BMC Infectious Diseases

The patients were seen initially by the supervising physician and at intervals of three months for routine follow up and for functional evaluations.

BMC Pulmonary Medicine

Animals that were tested over intervals of three months, over maturation or as adults, showed less consistent behaviours than animals tested twice during one week (Table  1).

BMC Ecology

A three-month follow-up period also means that the T0, T1, T3 and T4 measurements are conducted at equal intervals of three months.

BMC Psychiatry

Participants were followed up at intervals of three months for a year with health utility information being collected at baseline, six and twelve months [ 14].

Health and Quality of Life Outcomes

Human-verified similar examples from authoritative sources

Similar Expressions

53 human-written examples

PUHL: It was a habit of mine, sometimes at an interval of three months or longer, to go through the strong-rooms; if there was some occasion for it, for instance, when there was a visitor to be conducted or some new installation to be discussed, or when there was something of importance beyond mere attendance on the safes and the clients.

Yale University

After a decent interval of three months, President Barack Obama reiterated this point at a press conference, and then expanded in an interview a few weeks later, adding that the US should not "provide a victory to these terrorist networks by over-inflating their importance and suggesting in some fashion that they are an existential threat to the United States or the world order".

The Guardian - Opinion

This questionnaire, also for anonymous completion, was also sent twice at an interval of three months.

BMC Family Practice

For patients with paraplegia, the schedule was therefore an interval of three months between the first and second interview and an interval of one year between the first and third interview.

Health and Quality of Life Outcomes

This questionnaire was previously piloted in two general practices in Brisbane and was found to be valid (as judged by independent corroboration by an individual's spouse or partner) and reliable (test-retest over an interval of three months) [ 23].

BMC Public Health

Expert writing Tips

Best practice

Use "intervals of three months" when precision is needed, such as in scheduling or scientific contexts. For general communication, consider "quarterly" or "every three months" for simplicity.

Common error

Avoid using "intervals of three months" when the actual frequency is different (e.g., monthly or bi-monthly). Ensure the context clearly indicates a three-month period.

Linguistic Context

The phrase "intervals of three months" functions as an adverbial phrase, specifying the frequency or spacing of events or actions. Ludwig AI confirms its grammatical correctness.

Expression frequency: Uncommon

Frequent in

Science

60%

News & Media

20%

Academia

20%

Less common in

Ludwig's WRAP-UP

The phrase "intervals of three months" is a grammatically correct and usable expression in English, primarily serving as an adverbial phrase to indicate the frequency or spacing of events. According to Ludwig, it's most commonly found in scientific, news, and academic contexts, suggesting a formal to neutral register. While accurate, simpler alternatives like "quarterly" or "every three months" may be preferred for general communication. Avoid using the phrase when the actual frequency is different to prevent confusion.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

quarterly intervals

Uses 'quarterly' to directly convey the three-month duration, simplifying the phrase.

every three months

A more straightforward and common way to express the same frequency.

three-month periods

Focuses on the duration of the period rather than the spacing between them.

tri-monthly gaps

Emphasizes the gaps between occurrences, using 'tri-monthly' to denote every three months.

periods of a quarter year

More formal and emphasizes that three months equals a quarter of a year.

every quarter of a year

Similar to the previous one, but uses 'every' to highlight the recurring nature.

at three-month frequencies

Highlights the frequency of events using a slightly more technical term.

in quarterly installments

Suitable when discussing payments or tasks divided into three-month segments.

three-month segments

Focuses on dividing a longer period into smaller, three-month parts.

in spans of three months

Uses 'spans' to refer to the length of time between events or occurrences.

FAQs

How can I rephrase "intervals of three months" for simpler language?

For simpler language, you can use phrases like "every three months" or "quarterly". The best choice depends on the specific context.

Is it more appropriate to say "intervals of three months" or "quarterly intervals"?

"Quarterly intervals" is often more concise and suitable for business or scheduling contexts, while "intervals of three months" may be clearer in scientific or technical contexts where precision is important.

What does "intervals of three months" mean?

The phrase "intervals of three months" means that something occurs or is repeated every three months. This is equivalent to saying something happens on a "quarterly basis".

Can "intervals of three months" be used in both formal and informal writing?

Yes, "intervals of three months" is appropriate for both formal and informal writing, though simpler alternatives like "every three months" might be preferred in informal settings.