age not known

USAGE SUMMARY

The phrase "age not known" is correct and usable in written English.
It can be used in contexts where the age of a person, animal, or object is uncertain or not provided. Example: "The animal was found abandoned, and its age is not known."

✓ Grammatically correct

Science

News & Media

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

4 human-written examples

A total of 1,551 subjects ≥40 years of age not known to have diabetes were screened with A1C levels.

Diabetes Care

* Gestation age not known in 71 cases; † Labor duration for 75 deliveries not obtained Overall, 132 (36%) eclamptic mothers needed extra-care in ICU.

BMC Pregnancy and Childbirth

We excluded less than 1.5% of all the data from the Real Time Monitoring system because of missing data (for example, age not known, deprivation not known).

British Medical Journal

Number of grandchildren was included as a continuous variable; age of youngest grandchild was included as a categorical variable distinguishing four groups (0 4, 5 10, 11+, age not known).

Aging and Mental Health

Human-verified similar examples from authoritative sources

Similar Expressions

56 human-written examples

Why then did these young Negroes, all under age, not know how to read and write?

Huffington Post

30 We additionally excluded women for whom age, parity or gestational age was not known.

BMJ Open

Why centenarians age differently, i.e. which biological and pathophysiological processes drive ageing at this extreme old age, is not known.

EBioMedicine

The overall mean age was 53 (range 24 to 81; sd = 15.0086); data on age is not known for 12 respondents.

BMC Health Services Research

Mr. Ross, whose age is not known, did not return repeated calls to his home requesting comment.

The New York Times

Richard Barrientos, whose age was not known, was in stable condition at Southside Hospital in Bay Shore.

The New York Times

The kettledrum apparently originated in the Middle East, but its age is not known with certainty.

Encyclopedia Britannica

Expert writing Tips

Best practice

When reporting data where age is a variable, clearly indicate how missing age information is handled, such as using "age not known" as a distinct category.

Common error

Avoid guessing or estimating age when it is genuinely unknown; report it accurately as "age not known" to maintain data integrity.

Linguistic Context

The phrase "age not known" functions as an adjective phrase, modifying a noun (e.g., patient, subject, sample) to indicate that the age information is missing or unavailable. Ludwig AI indicates that the phrase is correct and usable in written English.

Expression frequency: Common

Frequent in

Science

60%

News & Media

25%

Encyclopedias

10%

Less common in

Formal & Business

0%

Wiki

5%

Academia

0%

Ludwig's WRAP-UP

The phrase "age not known" is a grammatically correct and widely used adjective phrase, as confirmed by Ludwig. It's used to clearly indicate when age information is missing in various contexts, particularly in scientific, news, and encyclopedic sources. Alternatives include "age unknown" and "age unspecified". When using this phrase, it's crucial to avoid making assumptions about age and to report missing data transparently to maintain accuracy and data integrity. Remember that if age is not relevant, you can simply omit its mention.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

Age unknown

Shorter and more concise way of saying that the age is not known, often used in data tables or summaries.

Age not stated

Directly indicates that the age was not mentioned or provided in the information.

Age unspecified

Indicates that the age was not specified or provided.

Exact age is not available

Indicates the precise age is not known.

Age undetermined

Implies that the age could not be determined or has not yet been established.

Age unconfirmed

Suggests that the stated age has not been verified or substantiated.

Age at onset is not known

Specifies that the age at which something started is not known, often used in medical or psychological contexts.

The age remains uncertain

Emphasizes the lack of clarity or certainty regarding the age.

Approximate age not available

Highlights that even an estimated age is not accessible or known.

Date of birth unknown

Emphasizes that the specific birth date is not available.

FAQs

How can I use "age not known" in a sentence?

You can use "age not known" when the age of a subject is not available or has not been recorded, for example: "The patient's medical history was incomplete; their "age not known" at the time of admission".

What are some alternatives to "age not known"?

Alternatives include "age unknown", "age unspecified", or "age undetermined". The best choice depends on the specific context and the reason why the age is not known.

Is it appropriate to use "age not known" in formal writing?

Yes, "age not known" is appropriate in formal writing, especially in scientific or academic contexts where accurate data reporting is essential. It clearly indicates that the information is missing rather than assumed.

When should I use "age not known" versus omitting the age entirely?

Use "age not known" when you want to acknowledge that age data is missing but relevant to the context. Omitting it entirely might be suitable if age is irrelevant to the discussion or analysis.