what is the flow of information? collect, compile, present, perceive, combine information, decision making
Why do we collect data? track disease trends, identify population at risk, allocate resources efficiently, inform
policies and programs to improve public health
What are the 7 S's of quantitative data? single case report of small series, vital statistic, surveys, self reporting, sentinel
monitoring, syndromic surveillance, social media
What is quantitative data? numerical data
What is a vital statistic? birth rate, death rate, marriage/divorce rate
What level is a single case of small series? Clinical
what is a single case of small series? Case reports for one or a small number of cases. Used when alerted to a new/novel
disease or emerging resistant disease.
What are some examples of a single case or small series? - 1981 AIDS report
- Novel pneumocystis cases (fungal pneumonia)
- Alert clinicians
- Rapid dissemination
What is statistics? Vital statistics and reportable diseases. Official records of birth, death, and
mandated case reports.
What is surveys? Structured questionnaires or interviews collecting data from a sample of a
population. Cover behaviors, risk factors, access to care.
- Are how we understand behaviors, risk factors, and health status at a population
level from a manageable sample
what are some examples of surveys? NHANES (nutrition), BRFSS (behavioral risk), SEER (cancer registry), georgia
OASIS
what is self reporting? data voluntarily provided by individuals about their health, behaviors, or exposures.
Useful for tracking side effects and symptoms.
What are some examples of self reporting? Mobile apps and wearables, diaries and logs, VAERS (Vaccine side effects
reporting), online communities, outbreaks near me
What is sentinel monitoring> Select reporting sites monitor certain diseases to give early warnings of trends,
outbreaks, and changes
What are some examples of sentinel monitoring? flu monitoring network, virus type changes, preselected clinics, standardized data
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what is a syndromic surveillance? Data collected on symptom patterns rather than confirmed diagnoses. Detects
outbreaks in real time.
what are examples of syndromic surveillance? ED chief complaints, OTC medication sales, school absenteeism, symptom clusters
What is social media|? Monitoring key words on social platforms or web data to detect and track disease
patterns or public health concerns.
What is an example of social media? Flu or fever mentions, lost sense of smell, regional keyword spikes, real time signals
Why do we compile data? To organize them and make them more useful. It acts as a guide for health policy,
resource allocation, and priority screening
What has to happen to raw data for it to be meaningful? Summarized
What are the 5 summary measures of population health infant mortality, under 5 mortality, life expectancy, hale, DALYs
How do you calculate infant mortality? deaths under 1 per 1,000 births
How do you calculate under 5 mortality deaths under 5 per 1000 live births
How do you calculate life expectancy? Avg years a person is expected to live
How do you calculate HALE? Health adjusted life expectancy - years in full life
How do you calculate DALY's? Disability adjusted life years - mortality + morbidity
Why does infant mortality rate matter? Indicator of countrys overall health - reflects maternal care quality, socioeconomic
conditions, and public health infrastructure.
Why does under 5 mortality rate matter? Measure of child health - closely linked to nutrition, maternal health, healthcare
access, and living conditions
What are key contributers to under 5 mortality rate? nutrition and food security, ,maternal health and pregnancy, healthcare access, safe
housing and clean water
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