Lesson 2 Flashcards
(42 cards)
Epidemiology
the study of the distribution and determinants of health and disease in human populations and is the principal science of public health.
Descriptive Epidemiology
Investigations of disease pattern in the community. Person (who) place (where) time (when)
Analytic epidemiology
investigation of the cause of disease, or etiogoly.
Prevalence
Number of existing cases that are found in a population at any given point in time. Total cases new and existing
Incidence
New cases within the at-risk population.
Epidemiological triangle
agent, host, environment
Host
age, sex, race, genetic profile, previous diseases, immune status, religion, customs, occupation, marital status, family background
Enviornment
temperature, humidity, altitude, crowding, housing, neighborhood, water, milk, food, radiation, pollution, noise
Agent
biological (bacteria or viruses), chemical (poison, alcohol, smoke), physical (trauma, radiation, fire), nutritional (lack, excess)
Descriptive epidemiology
focuses on the amount and distribution of health and health problems within a population (person, place, and thing0
Retrospective cohort study
Comparison of those who have a particular disease or not. Data collection extends back in time.
Analytic epidemiology
Investigates the causes of disease by determining why a disease rate is lower in one population group than in another.
Cross sectional study
Measures the cause (exposure) and the effect (disease) at the same point in time. Pros can establish the disease prevalence bit not incidence.
Prospective cohort study
Monitors a group of disease-free individuals to determine whether and when a disease occurs.
Randomized clinical trial
A scientific experiment that compares the effects of different treatments or interventions by randomly assigning participants to groups.
Correlations
Statistical measures that describe the relationship between two varables.
Casuality
Direct cause and effect relationship between two variables
Six criteria that establish the existence of cause-and-effect relationship
Strength of association, dose response relationship, temporally correct relationship, biological plausibility, consistency with other studies, specificity.
Applications of epidemiology in community-oriented nursing
Nurse epidemiologist, school nurses, communicable disease nurse, outpatient nurses, hospital infections control nurse, all nursing documentation on patient charts and records is an important source of data for epidemiological reviews.
Surveillance
Mechanism for the ongoing collection of community health information. Essential to effective and responsive public health programs.
Census Data
changes in an area over time. Done every 10 years. Provide data on demographic variables and workforce.
Vital statistics
Official registration records of births, death, marriages, divorces, and adoptions from the basis of data in vital statistics. Reported by local and state agencies such as the WA state department of health. Complied annually.
The National Center for Health Statistics (NCHS)
Local, regional, and state government reports. Locally generated data collection. Analysis of demographic information provides descriptive information about the population.
Needs Assessment
Used to understand the community’s perspective. Interview key community informants. Use community forums, focus groups, or surveys. 12 steps in a needs assessment.