Year 3 FoPC Whirlwind Tour Flashcards
Sources of epidemiology data
- Hospital activity stats
- Drug misuse database
- Expenditure data from NHS
- General practice morbidity data
- Social securtiy stats
- Accident statistics
2 broad categories of studies
- Discriptive
- Analytical
What are discriptive studies
- Describe the amount and distribution of a disease in a given pop.
- Cheap quick and give valuable initial overview
- Can’t prove causation however
3 types of analytical studies
- Cross-sectional study = Looks at single point in time
- Case controlled studies = One group has disease one doesn’t, looks at risk factors as to why one group got disease
- Cohort studies = A healthy group are followed through time
Types of bias
- Selection = sample isn’t representiative of pop.
- Information = systemic error in measuring exposure or disease
- Follow up bias = Follow up some folk more than others
- Systematic error = Problem with measuring tool
What are confounding bias
- Distorts the relationshp between the exposure and the disease
- Factor which is associated independently with both the disease and exposure under investigation
Criteria for causality
- Strength of association
- Consistency (repeated observation in different pop.s under different circumstances)
- Specificity (a single exposure leading to a single disease)
- Temporality (timing, exposure comes before disease)
- Biological plausibility (Association agrees with know biology of the disease)
- Biological gradient (dose-response relationship ie more exposure more risk of disease)
What is protection
Aimed at factors beyond the control of the individual like changing laws
What is Health promotion
Any activity designed to prevent disease or enhance health (can be planned or opportunistic)
- Educational (informed choice)
- Socio-economic (make the healthy choice the easy choice)
- Psychological (change one’s attitude and behaviours)
Health promotion examples
- Primary care (planned or opportunisctic)
- Govt. legislation like age limit and taxes
Challenges to health promotion
- Doctors think resources could be better spent elsewhere
- Health promotion has no evidence for most health promotion activities
What are Wilson’s criteria
Disease
- Important
- Understood natural hx
- Pre-symptomatic stage
Test
- Cost-effective
- Sensitive and specific
- Acceptable
Rx
- Cost-effective
- Acceptable
- Better outcome if early rx
Cycle of change
- Pre-cotemplation
- Contemplation
- Preperation
- Action
- Maintenance
- Relapse
Types of prevention
- Primary prevention (preventing a disease, eg vaccines)
- Secondary (early (pre-clinical stage) detection to cure or prevent symptoms )
- Tertiary (limit morbidity caused by a disease)
Types of sustainability
- Global (climate change, resource depletion etc)
- NHS (Renewable energy, travel plans, Greener building design, meet funding challenges etc)
-Personal and career
+ves = secure job, workload ok, enjoy team working, work-life balance, are appreciated, develop special interests.
ves = high workload, difficult cases, running a buisiness