Epidemiology, biostatistics and public health
Study designs, measures and public health.
194 pages
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- Study designCommunity trialA prevention programme is tested in whole communities (towns, neighbourhoods) and compared with…
- Statistical testAnalysis of variance (ANOVA)It compares the means of three or more groups at once, in a single test, without inflating the…
- System and programmeNotifiable events in ColombiaThey are the diseases, deaths and situations every provider must report to SIVIGILA, each with…
- MeasureAdditive and multiplicative interactionTwo factors together can add or multiply their effects
- MeasureAgreement and the kappa statisticKappa measures how much two observers agree beyond what they would agree on by pure chance
- ConceptClinical practice guidelinesA clinical practice guideline gathers recommendations based on systematic reviews to help…
- ConceptEpidemiologic transitionWith development, the main causes of death shift from infections to chronic diseases such as…
- ConceptApplying for research fundingHow a project is put to a funding call: its parts, how the budget is built and the criteria used…
Areas
- Study designs30 pagesCommunity trial · Blinding · Case report and case series
- Biostatistics24 pagesAnalysis of variance (ANOVA) · Chi-square test · Choosing a statistical test
- The Colombian health system23 pagesNotifiable events in Colombia · The PAI as a public health programme · Comprehensive health care pathways (RIAS)
- Bias, confounding and causation17 pagesAdditive and multiplicative interaction · Attrition bias · Bradford Hill criteria for causation
- Diagnostic tests15 pagesAgreement and the kappa statistic · Agreement for continuous measures: ICC and Bland-Altman · Choosing a cutoff: sensitivity vs specificity
- Evidence-based medicine15 pagesClinical practice guidelines · Communicating risk and evidence · Critical appraisal of a paper
- PPublic health indicators15 pagesEpidemiologic transition · Maternal mortality ratio · Infant, neonatal and perinatal mortality
- Research methods14 pagesApplying for research funding · Authorship, peer review and scientific communication · Choosing and defining variables
- Measures of frequency and association13 pagesAbsolute risk reduction · Attributable risk and attributable fraction · Incidence
- Epidemiology basics9 pagesEpidemiologic triad and chain of infection · Levels of prevention · History of epidemiology
- Survival analysis7 pagesActuarial life tables · Five-year and relative survival · Hazard ratio and the Cox model
- Surveillance and outbreaks7 pagesBasic reproduction number (R0) and herd immunity · Endemic, epidemic, outbreak and pandemic · Outbreak investigation
- Screening5 pagesOverdiagnosis · Principles of screening · Lead-time bias
A to Z
About this section
What the exams ask and what you need to read a paper: how a study is designed, how to measure how common a disease is and how strong an association is, how to judge a diagnostic test, what bias and chance are, and how public health works in Colombia. Every concept comes with a worked example in numbers.
Educational content on epidemiological and statistical methods; the examples use made-up numbers to teach the calculation. Not a clinical or legal guide: current Colombian rules are in the official sources.
Representative model, for educational purposes only.