case per case

USAGE SUMMARY

The phrase "case per case" is not correct in standard written English; the correct expression is "case by case." You can use it when discussing situations that are evaluated individually rather than applying a blanket rule or decision.
Example: "We will handle each request on a case by case basis to ensure fairness."

⚠ May contain grammatical issues

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

2 human-written examples

Basically, HR-QoL assessment is accepted and recommended to support tumour shrinking and/or toxicity and symptoms endpoints, justified case per case.

Health and Quality of Life Outcomes

More flexibility is allowed in biomarker method validation where during pre-study validation each assay can be evaluated on a case per case basis, with 25% being the default value (30% at the LLOQ) for precision and accuracy.

British Journal of Cancer

Human-verified similar examples from authoritative sources

Similar Expressions

58 human-written examples

And though no one is asking the cloud to disappear, developers, IT staff, and admins are still largely compelled to interact with these systems on a case-per-case basis.

TechCrunch

In case of TPP, the use of organic solvent might affect activity of some proteins and usability of TPP has to be determined on a case-per-case basis.

BioMed Research International

There are no dedicated anaesthetists allocated to the PACs and their input is on a case-per-case basis, when the consultants are contacted by the nurses as needed.

BMC Medical Informatics and Decision Making

The median (first quartile, third quartile) number of cases per case farm was 2 (1, 3.75) and the range 1 25.

BMC Veterinary Research

The test statistic would then be an average number of neighbor cases per case instead of the integer total number of cases, and would facilitate comparison across different studies with different numbers of cases.

Environmental Health: A Global Access Science Source

The additional cost per case detected was NZ$124600 per case.

BMJ Open

For donors and government organizations whose remit is specifically TB control, programs can be evaluated in terms of cost per case detected or per case averted.

American Journal of Tropical Medicine and Hygiene

In the base case, the cost per case of bilateral hearing impairment detected was €40.12 for no tracking and €40.63 for tracking.

BMC Health Services Research

Cost-effectiveness is estimated from the perspective of the provider, patient and society in terms of the cost per TB case cured and cost per case successfully treated.

Cost Effectiveness and Resource Allocation

Expert writing Tips

Best practice

Always use the correct phrase "case by case" instead of "case per case".

Common error

Avoid using "per" when you mean "by" in the context of individual assessments. "Per" usually indicates a rate or ratio (e.g., miles per hour), while "by" indicates a method or manner (e.g., case by case).

Linguistic Context

The phrase "case per case" is an incorrect prepositional phrase. According to Ludwig AI, the correct form is "case by case". The preposition 'per' usually indicates a ratio or rate, not a method of assessment.

Expression frequency: Rare

Frequent in

Science

50%

News & Media

50%

Formal & Business

0%

Less common in

Wiki

0%

Academia

0%

Encyclopedias

0%

Ludwig's WRAP-UP

The phrase "case per case" is an incorrect expression; the proper idiomatic form is "case by case". As Ludwig AI points out, using "per" in this context is grammatically inappropriate, as "per" is usually reserved for ratios or rates. The intended meaning—individual assessment—is better conveyed with the correct phrase. While some examples exist, they are infrequent, suggesting a need to avoid "case per case" in favor of its grammatically sound alternative. Use "case by case", "individually", or "on an individual basis" to ensure clarity and correctness.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

case by case

This is the correct and idiomatic way to express individual consideration.

on a per-case basis

A slightly more formal alternative, highlighting individual assessment.

on an individual basis

This highlights that each situation is treated separately.

individually

This emphasizes the separate and distinct handling of each instance.

for each specific case

This is a more verbose way to express individual review.

by individual assessment

This emphasizes the act of evaluating each case distinctly.

separately

This indicates that each item or matter is dealt with in isolation.

in each instance

This clarifies that every occurrence is examined.

one by one

This suggests a sequential consideration of cases.

according to the circumstances

This focuses on adapting decisions to the specifics of each situation.

FAQs

What is the correct way to say "case per case"?

The correct phrase is "case by case". "Case per case" is not standard English.

When should I use "case by case"?

Use "case by case" when you're discussing situations that are evaluated individually, rather than applying a uniform rule.

What does "case by case" mean?

The expression "case by case" means that each situation or item is considered separately and judged on its own merits.

Are there any synonyms for "case by case"?

Yes, you can use alternatives like "individually" or "on an individual basis" to convey a similar meaning.