case fatality rate: meaning, definition, pronunciation and examples
C1Formal, Technical, Academic, Medical
Quick answer
What does “case fatality rate” mean?
The proportion of confirmed cases of a specific disease that result in death.
Audio
Pronunciation
Definition
Meaning and Definition
The proportion of confirmed cases of a specific disease that result in death.
A key metric in epidemiology and public health representing the percentage of diagnosed individuals who die from the disease, often used to gauge the severity and deadliness of an outbreak.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or spelling. Usage is identical in medical/epidemiological contexts.
Connotations
Neutral, clinical, quantitative. No regional connotative differences.
Frequency
Low frequency in general discourse but spikes significantly during public health crises or academic/medical reporting.
Grammar
How to Use “case fatality rate” in a Sentence
The case fatality rate of [DISEASE] is [NUMBER].to calculate the case fatality ratea case fatality rate for [POPULATION]Vocabulary
Collocations
Examples
Examples of “case fatality rate” in a Sentence
adjective
British English
- The case-fatality-rate data was alarming.
- A case-fatality-rate estimate.
American English
- The case fatality rate data was alarming.
- A case fatality rate estimate.
Usage
Meaning in Context
Business
Rare, except in insurance, risk assessment, or pharmaceutical industry reports.
Academic
Common in epidemiology, public health, medical, and virology research papers.
Everyday
Very rare outside news reporting on major disease outbreaks.
Technical
Core term in epidemiology, clinical medicine, and public health data analysis.
Vocabulary
Synonyms of “case fatality rate”
Vocabulary
Antonyms of “case fatality rate”
Watch out
Common Mistakes When Using “case fatality rate”
- Using it synonymously with 'infection fatality rate' (which includes unconfirmed cases).
- Saying 'case fatality ratio' interchangeably, though 'rate' is more precise.
- Omitting 'case' and just saying 'fatality rate', which is ambiguous.
FAQ
Frequently Asked Questions
Case fatality rate uses confirmed cases as the denominator. Mortality rate typically uses the total population at risk as the denominator. CFR measures disease severity among the sick; mortality rate measures disease impact on a population.
It is most commonly abbreviated as CFR in technical writing.
Yes, CFR can change due to improved treatments, vaccination, changes in testing (which identifies more mild cases), or strain mutations. It is not a fixed property of a disease.
It is a proportion, so expressing it as a percentage (e.g., 1%) is intuitive for comparing the deadliness of different diseases or outbreaks relative to their confirmed case numbers.
The proportion of confirmed cases of a specific disease that result in death.
Case fatality rate is usually formal, technical, academic, medical in register.
Case fatality rate: in British English it is pronounced /ˌkeɪs fəˌtæl.ɪ.ti ˈreɪt/, and in American English it is pronounced /ˌkeɪs fəˌtæl.ə.t̬i ˈreɪt/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Remember CFR: Count Fatalities Ratio. It counts how many confirmed cases end fatally.
Conceptual Metaphor
DISEASE SEVERITY IS A PROPORTION.
Practice
Quiz
What does 'case fatality rate' specifically measure?