- Association means there is a relationship between factors but does not necessarily imply causation. Causation requires additional evidence.
- There are different types of associations - spurious associations are not real, indirect associations involve a confounding factor, and direct associations can involve one-to-one or multifactorial causation.
- Several criteria must be met to determine if an association is likely causal, including temporal relationship, strength, specificity, consistency, biological plausibility, and coherence of the association. Establishing causation requires systematically evaluating an association against these epidemiological considerations.
At the end of this session, the students shall be able to, Define Cause
Define Association
Define Correlation
Types of association
Additional criteria for judging causality
Differentiate between association and causation
At the end of this session, the students shall be able to, Define Cause
Define Association
Define Correlation
Types of association
Additional criteria for judging causality
Differentiate between association and causation
this presentation takes you through the concept of association observed between variables in a study and how could it become a causative association in step-wise manner.Exemplify using Bradford hill criteria. slides after references are extra slides not covered in the presentation.
Introductory lecture on some epidemiological models in causal inference, including the sufficient component cause model and the potential outcomes model.
this presentation takes you through the concept of association observed between variables in a study and how could it become a causative association in step-wise manner.Exemplify using Bradford hill criteria. slides after references are extra slides not covered in the presentation.
Introductory lecture on some epidemiological models in causal inference, including the sufficient component cause model and the potential outcomes model.
steps in epidemic investigation
Prepare for field work
Confirm the existence of an outbreak
Verify the diagnosis and determine the etiology of the disease.
Define the population at risk
Develop case definition, start case finding, and collect information on the cases(after choosing study design)
Describe person, place and time (by questionnaire)
Evaluation of ecological factors
Formulate several possible hypothesis hypotheses.
Test hypotheses using analytical study
Refine hypotheses and carry out additional studies
Draw conclusions to explain the causes or determinants of outbreak based on clinical, laboratory, epidemiological & environmental evidence
Report and recommend appropriate control measures to concerned authorities at the local/national, and if appropriate at international levels
Communication of the findings
Follow up of the recommendation to assure implementation of control measures
Association.pptxis method we have an x -ray machine, an intraoral sensor and ...RabeaDia
is method we have an x -ray machine, an intraoral sensor and computer monitor
A sensor is placed into the mouth of the patient and exposed to x –ray, the sensor captures the
radiographic image and then transmits the image into a computer monitor. Within seconds of
exposing the sensor to x
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
263778731218 Abortion Clinic /Pills In Harare ,sisternakatoto
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Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
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Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
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2. INTRODUCTION
(JUST TO REFRESH UR MEMORY )
• Descriptive study: it like a detective who want to solve mysteries by identifying the case
(which is the disease problem ) and try to connect between evidence which are here host
,agent and environmental factors
4. ANALYTICAL AND EXPERIMENTAL STUDY
• Its just like a scientist who want to prove the hypothesis by observing and they always
asking themselves:
• Is there is any association between CAUSE and DISEASE
They test the hypothesis. And those are known
as EPIDEMIOLOGISTS
Anyway ….. from this
bold word our lesson
comes
5. • In this world many diseases has more than 1 etiology either cause or risk factor i.e.
Multifactorial and this makes it difficult to relate the cause with the disease. U CANT POINT
FINGER on a cause and say THAT’S IT.
• The more association between causes and disease, the more investigation we need, to find
the cause
6. THE MORE ASSOCIATIONS
The more investigation
To detangle the web of causation (solve it)
7. • Association is not always causation
• Association means there is relationship between stuffs, but it doesn’t have to be a cause.
They occur frequently together .
• That’s why the epidemiologist 1st state that
• There association between A and B
• Then
• Oh yes the association is likely to be a cause That’s mean A almost the cause of B
8. BUT…. HOW TO KNOW WHICH ONE IS MORE
ASSOCIATED THAN THE OTHER???
• That’s by something called CORRILATION
• It’s the degree of association between two characters
• It is measured by the correlation coefficient which range from -1.0 to 1.0
9. correlation •
risks - - •
• Correlation cannot be used to invoke causation because the sequence of exposure
preceding disease cannot be assumed to have occur and it don’t measure risks
Which one ???!!!!
10. IMPORTANT SENTENCE
• Causation implies Correlation BUT correlation does not imply causation.
•
11. TYPES OF ASSOCIATION:
• A- spurious association:
• Spurious= not real
• That’s mean the association between disease and cause is not real.
• This is due to selection bias
• Eg: more perinatal mortality in mothers that give birth at hospital than at home
12. • B- indirect association :
• Simple example: Sahar is a friend with Salma, and Salma is Hanaa, so Hanaa is Sahar’s
friend too but indirectly. The common friend is Salma.
• So the association is due to the presence of another factor which is common to both,
known as CONFOUNDING factor.
• E.g. of confounding factors:
• Age, sex, social class
13. • Eg of indirect association: hint: remember salt(which usually contain iodine) and sugar.
1. Altitude and endemic goiter confounding factor is iodine deficiency.
2. Glucose and CHD ,confounding factor is cigarette smoking(it increase the # of cups
of coffee and amount of sugar u consume)!!!!
14. 3. Colera and water supply confounding factor is vibrio bacteria……. And so on
15. • C- Direct association:
1. One to one causal relationship
2. Multifactorial causation.
16. • One to one causal relationship
• Change in A is followed by change in B.
• When A is present B must result.
• Eg Measles.
• But its not always that simple as some causes can cause more than 1 disease like strept.
17. • Multifactorial causation:
• Either the causes are acting:
1. Independently
2. Or cumulatively
pollution
smoking Lung cancer
asbistos
18. WHEN WE CAN SAY THAT THIS ASSOCIATION IS
LIKELY TO BE CAUSATION??
• We have certain criteria that should be present:
• Temporal association ( )
• Strength of association
• Specificity of association
• Consistency of association( )
• Biological plausibility( )
• Coherence of association
19. • Temporal association :
• The exposure to putative cause must precede temporarily the onset of the disease
• Its more obvious in acute disease more than in chronic disease
20. • Strength of association:
• Remember we have experimental data and analytical data
• When there is no experimental data the strength of association will depend on
• relative risk,
• dose response relationship,
• duration and response relationship
• Otherwise by cessation experiment
21. • Specificity of the association:
• It’s the most difficult to occur for 2 reasons:
• Single cause or factor can give rise to more than 1 disease
• Most diseases are due to multiple factors
• Specificity supports causation but lack of specificity does not eliminate it.
It supports the idea of one to one
22. • An example of this: in the same manner of the previous slide:
• Not everyone who smokes develops cancer
• Not every one who develop cancer has smoke
23. • Consistency of the association : means that if u did the experiment or the
research 10000000000000 times u will get the same result even if u did it each time by
different method