Health and Society (Block 1-3) Flashcards
Define age standardisation
Allows populations to be compared when the age profiles of the populations are different
What is Giemsa banding?
How does it arrange chromosomes?
Pattern for each chromosome
Arranges chromosomes based on their p+q arms, shape and centromere
3 examples of meiosis errors
Unequal segregation
Chromosome non-disjunction/division
5 examples of chromosome abnormalities
Deletions, duplications, inversions, translocations and isochromosomes
Define polymorphism
2 or more phenotypes in the population of a species occupying the same habitat at the same time
Which diagram is used to study inheritance?
Pedigree diagrams
What are the 2 types of gene mutations
Somatic
Germline
What does it mean if a circle is coloured in on a pedigree diagram?
That person is affected
4 changes to proteins that can occur due to a mutation
Shorter
Wrong amino acid
Wrong structure
No binding/active site
Define missense mutation
One DNA base pair is changed resulting in a different amino acid
Define nonsense mutation
1 DNA base pair is changed which signals the cell to stop building the protein
Define reading frame
3 bases that code for an amino acid
Define trinucleotide
3 base pair repeats
What do you need for cancer to be inherited?
Many mutations
Define genetics
Bio-medical differences between individuals which you can control and manipulate
They are linked to biology and social factors
What happens to medical decisions over time?
They change as society changes
Define positive eugenics
Intervention to humans to improve the genetic inheritance of a child/community
Define negative eugenics
If you are of a lower socio-economic status then you have worse inheritance
What did Francis Galton believe?
That fitter people should breed together to produce the ‘perfect species’
What was the eugenics society in the UK?
When was it created?
Explained social status by biology
1907
When was DNA discovered?
1953
When was recombinant DNA discovered?
1973
When did the Human Genome Project start?
1990
What does polygenic mean?
Many genes have multi-factorial causes
What type of medicine is becoming more popular?
Personalised medicine
Define evidence
An observation, fact or organised body of information that helps to decrease uncertainty
Define decision making
A choice or action made to achieve goals
What are the 3 types of uncertainties that doctors face?
Technical
Personal
Conceptual
Give an example of a technical uncertainty
Wrong diagnosis
Give an example of a personal uncertainty
Not know what the patient wants
Give an example of a conceptual uncertainty
Unable to apply the knowledge to the patient
What is the purpose of a ‘cumulative meta-analysis’
Combines the research together so that time and money is not wasted if the information is already there
2 ways in which evidence improves clinical care
Increases efficiency
Standardising treatments
Define evidence-based decision making
The use of the current best evidence to make decisions about the care and value of patients so that uncertainty is reduced
What 4 things does evidence-based practise rely upon?
Research, resources, patient preferences, expertise
What are the CQC
Care and quality commission
Define economics
How people choose to allocate scarce resources
Define opportunity cost
The value of what you give up when you have to make a decision
2 examples of sellers in the NHS market
GP’s
Hospitals
Explain the flat curve of medicine
NHS first established: Little we could do but effective
NHS now: A lot we can do but not as effective
Describe the NHS in one word
Inefficient
Define epidemiology
Distribution and determinants of a populations health
Applying this to control the health of the population
Define descriptive epidemiology
How things are distributed in patterns across society
Define analytical epidemiology
Exploits the distributions to ask and answer questions
Define experimental epidemiology
Change the distributions to see the effect
Define incidence
New diagnosis and immigration of the ill
Define prevalence
Number of individuals who have the disease
What is the equation for incidence?
Number of new cases in a period / Number initially free of disease
What is the equation for prevalence?
Number with the disease at a specific time/ Total population
3 ways to express the answer to incidence/prevalence
Percentage
Decimal
Number affected per number sampled
What word describes cumulative incidence?
Rate
What is the difference in the trend between the whole population and smaller populations?
They differ
What is another word for incidence rates?
Person-time incidence rates
What do symptoms not always lead to?
Help seeking behaviour