six month interval

USAGE SUMMARY

The phrase "six month interval" is not correct as it should be "six-month interval" with a hyphen.
You can use it to describe a period of time that lasts for six months, often in contexts related to scheduling or planning. Example: "The project will be reviewed at a six-month interval to assess progress and make necessary adjustments."

⚠ May contain grammatical issues

Science

News & Media

Wiki

Human-verified examples from authoritative sources

Exact Expressions

13 human-written examples

Sage also said the six month interval between doses can be lengthened to 12 months, if that helps immunisation programmes.

The Guardian

To accomplish this, the data were organized as multiple records per patient, each record being defined as a six month interval, as described above.

Plosone

VF ranged between 3%and16%6% within each six month interval after initiating second line ART.

BMC Infectious Diseases

Patients received leuprorelin 45 mg subcutaneously on days 1 and 168, a six month interval.

Clinical interventions in aging

Services scheduled annually, if delivered, were coded as delivered both in the interval in which they occurred and the following six month interval.

BMC Health Services Research

This may be due to the inadequate power of the study to distinguish the smaller effect size at the six month interval compared to the immediate effect.

BMC Medical Education

Human-verified similar examples from authoritative sources

Similar Expressions

47 human-written examples

At six month intervals (June and December every year work well) attach charger and charge the battery overnight.

WikiHow

Data were collected from youth in six month intervals, for an 18-month period of time.

Children and Youth Services Review

As a test of the importance of endogenous search intensity, we compare the Income Assistance survival probabilities, at six month intervals, for the control and program groups in the social experiment and in the model simulation graphically in Fig. 1 and with formal tests in Table 2.

IZA Journal of Labor Economics

Outcomes were evaluated at six month intervals over the two years.

BMC Public Health

Since 2008, the CQ is applied at fixed- six month intervals to all the patients.

BMC Musculoskeletal Disorders

Expert writing Tips

Best practice

Use a hyphen when "six-month" acts as a compound adjective before a noun (e.g., "a six-month interval").

Common error

Failing to hyphenate "six-month" when it modifies a noun can lead to grammatical errors. Always use "six-month interval", not "six month interval", when describing a duration.

Linguistic Context

The phrase "six month interval" functions as a noun phrase, typically serving as an adverbial modifier to indicate the duration or frequency of an event or process. While the Ludwig AI identifies this phrase as grammatically incorrect without a hyphen, its prevalent use indicates its function is widely understood.

Expression frequency: Common

Frequent in

Science

75%

News & Media

15%

Wiki

10%

Less common in

Formal & Business

0%

Encyclopedias

0%

Social Media

0%

Ludwig's WRAP-UP

The phrase "six month interval" refers to a period of six months between events or measurements. While frequently used, it is grammatically incorrect without a hyphen when used as an adjective, as pointed out by Ludwig. The correct form is "six-month interval". This phrase is commonly found in scientific, medical, and news contexts. Always use the hyphen when "six-month" modifies a noun to maintain grammatical accuracy. Consider alternatives like "six-month period" or "half-year" for variety.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

six-month period

Uses "period" instead of "interval", emphasizing duration rather than the space between events. Also hyphenates "six-month".

six-month duration

Highlights the length of the interval. Also hyphenates "six-month".

six-month timeframe

Emphasizes the duration of time within which something occurs. Also hyphenates "six-month".

half-year

Directly indicates six months as half of a year, useful in financial or reporting contexts. Also hyphenates "half-year".

six-month phase

Implies a stage or segment lasting six months. Also hyphenates "six-month".

six-monthly gap

Focuses on the space or break between occurrences. Also hyphenates "six-monthly".

semester

Specifically refers to a six-month academic term, narrowing the context. Hyphen is not needed

six-month stretch

Informal way of indicating a period of six months. Also hyphenates "six-month".

semi-annual term

Similar to bi-annual, but more formal and emphasizing a defined period. Hyphen is needed

bi-annual period

Indicates something occurring twice a year but may not strictly define the duration. Hyphen is not needed

FAQs

How should I correctly write "six month interval"?

The grammatically correct way to write this phrase is "six-month interval". The hyphen is necessary when "six-month" functions as a compound adjective modifying "interval".

What's a synonym for "six month interval"?

You can use phrases like "six-month period", "half-year", or "six-month timeframe" as alternatives.

Why is a hyphen needed in "six-month interval"?

The hyphen in "six-month interval" connects "six" and "month" to create a compound adjective that describes the type of interval. Without the hyphen, the phrase is grammatically incorrect.

Is it ever correct to write "six month interval" without a hyphen?

While commonly seen, "six month interval" is grammatically incorrect. The hyphen is generally required when "six-month" is used as an adjective before a noun. It is correct in a sentence like: "The interval lasted six months."