WHAT IS THE PUBLIC HEALTH “NUMERATOR” & “DENOMINATOR”

Posted on March 21, 2020 by Dr. David Edward Marcinko MBA MEd CMP™

What it is – How it works?

Courtesy: http://www.CertifiedMedicalPlanner.org

In public health epidemiology, while numerators are measures of health events, the denominator is the population from which events are drawn.

LINK: https://www.amazon.com/Dictionary-Health-Economics-Finance-Marcinko/dp/0826102549/ref=sr_1_6?ie=UTF8&s=books&qid=1254413315&sr=1-6

For example, if we are measuring the incidence of Covid-19 among teens, who might comprise your denominator?

ANSWER: Any denominators used should be reflective of the population who could have been included in the numerator had they developed the condition of interest. This is the population at risk, and is often taken as the number of people who are disease-free at the start of data collection. If individuals who could not develop the condition of interest were included in the denominator, this would result in an underestimation of calculated rates.

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PODCAST: https://www.coursera.org/lecture/epidemiology-tools/denominators-jnpaa

PODCAST: https://www.healthknowledge.org.uk/public-health-textbook/research-methods/1a-epidemiology/numerators-denominators-populations

Assessment: Your thoughts and comments are appreciated.

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WHAT IS Ro [r-NOUGHT] IN HEALTH EPIDEMIOLOGY?

Posted on February 11, 2020 by Dr. David Edward Marcinko MBA MEd CMP™

A Relationship to Financial Investing?

Courtesy: www.CertifiedMedicalPlanner.org

By Dr. David E. Marcinko MBA CMP

The basic reproduction number R0, [r nought) of an infection is the number of cases it generates on average over the course of its infectious period, in an otherwise uninfected population.

LINK: https://www.amazon.com/Dictionary-Health-Insurance-Managed-Care/dp/0826149944/ref=sr_1_4?ie=UTF8&s=books&qid=1275315485&sr=1-4

The metric determines whether or not a disease can spread through a population. The root concept is traced to Alfred Lotka and Ronald Ross, but its first application was by George MacDonald in 1952, with malaria.

LINK: https://www.healthline.com/health/r-nought-reproduction-number

FORMULA: When

R0 < 1

the infection will die out in the long run. But if

R0 > 1

the infection will be able to spread in a population.

LINK: https://wwwnc.cdc.gov/eid/article/25/1/17-1901_article

ASSESSMENT: Generally, the larger the value of R0, the harder it is to control the epidemic. In the past week, Corona virus estimates ranged from 1.4 to 5.5. The World Health Organization (WHO) range was 1.4 and 2.5. In comparison, seasonal flu affects millions each year but has an R0 of just 1.3. The R0 rate for measles ranges from 12 to 18.

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ECONOMY: http://www.msn.com/en-us/money/markets/coranavirus-outbreak-clouds-2020-view-global-economy-week/ar-BBZyEDY

Your thoughts are appreciated.

LINK: https://www.marketwatch.com/story/coronavirus-spreads-damage-to-wall-street-could-the-us-economy-be-next-2020-02-01?mod=home-page

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Against the Rising Tide: Looking for Biostatisticians and Epidemiologists to help shape Drug-Testing Policy to be more Evidence-Based

Posted on February 25, 2017 by Dr. David Edward Marcinko MBA MEd CMP™

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More on Evidence-Based Medicine

[A Special ME-P Report]

By Michael Lawrence Langan MD

 Pharma

Against the Rising Tide: Looking for Biostatisticians and Epidemiologists to help shape Drug-Testing Policy to be more Evidence-Based.

More:

Integrity and Accountability [The Declining State of Physician Health and the Urgent Need for Ethical and Evidence-Based Leadership]

About the Author

Dr. Langan graduated from Oregon Health Sciences University School Of Medicine, Portland Oregon with an MD 21 years ago. He had his residency training of Geriatric Medicine-Internal Medicine at Beth Israel Deaconess Medicine Center and Internal Medicine at St Vincent Hospital Medicine Center.

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