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41 Cards in this Set
- Front
- Back
Why population data?
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Allows generalization beyond group studied and it is needed for statistical inference such as estimating parameters of health, morbidity, and mortality
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Need large numbers of at-risk individuals for ____ frequency diseases
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low
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Epi research needs _____ data sets
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large
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What are the 4 criteria for quality and utility of epi data?
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1.) Nature of Data
2.) Availablity of data 3.) Completeness of population coverage (representativeness and thoroughness) 4. Strengths vs. limitations |
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What are the five sources of epi?
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1) vital statistics
2.) case registries 3.) Physicians records 4.) surveys of general population 5.) Hospital and clinic cases |
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_____ ____ _______ affects possible types of statistical analyses and inferences
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nature of data
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Which of the four criteria for quality and utility of epi data is being described?
* Relates to investigator's access -Medical records and data with personal identifiers (requires releases from individual patients) -Data with personal identifiers/characteristics stripped * population surveys available from government and research organizations and data tapes, compact disks, internet *Perturbed data (released by some organizations) are responsible for identifying characteristics modified to protect individual's privacy |
Availability of data
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Which of the four criteria for quality and utility of epi data is being described?
*Generalizability of data: -clearly defined population based or -unspecified mixture of diff populations -representative of target study population? -Omissions? This may include major subdivisions of population such as low socioeconomic stats individuals and minority groups |
Representativeness or external validity
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Which of the four criteria for quality and utility of epi data is being described?
* All cases of particular health phenomenon included? -subclinical cases? -only sever cases (usually come to authorities' attention) -Likely substantial numbers of unreported cases? |
Thoroughness
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Which of the four criteria for quality and utility of epi data is being described?
-Dictates utility of data for particular epi research including mortality investigation, infectious disease outbreaks, chronic disease incidence. -Overlaps with "completeness of population Coverage" criterion |
Strengths vs limitations
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What can the criteria of quality and utility epi data be applied to?
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Evaluation of published epidemiologic research
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These are used as starting points for descriptive/analytical epi studies
-gives info on basic facts relating to distribution of disease -They can be accessed from library, office, home, or other |
Computerized bibliographic databases
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Bibliographic citations on health problem obtained from:
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-index medicus
-psychological abstracts -sociological abstracts -education index |
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What are the three online databases?
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MEDLINE, TOXLINE, DIALOG
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What is Ehlers-danlos syndrome? And what was the solution?
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A platelet aggregation defect segregated concordantly with skin and joint abnormalities. Fibronectin fixed this problem
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-contains any personally identifiable features about a living individual
-Information about whether individual participated in study -Information that would identify deceased individual |
Confidential data
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-individual confidential records maintained by federal agencies or contractors without permission of individual
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Privacy act of 1974
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This act protects individually identifiable health information
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Health insurance portability and accountability act of 1996
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Voluntary release of info by one investigator or institution to another for purposes of scientific research
-may enhance research outcome -primary investigator may lose control over his/her intellectual property |
data sharing
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Joining data from two or more sources such as employment data and mortality data is known as ...
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record linkage
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____ ______ may facilitate research
-maternal and child concerns -chronic disease tracking -natural history of specific diseases |
record linkage
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This entails a funeral director with an attending physician (date and cause of death) (coroner or medical examiner). There maybe multiple causes and an unclear cause in older individuals. May be arbitrary
Local registrar---State registrar--> national center for Health statistics |
Death certificate
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This group compiles and publishes national mortality rates (vital statistics of the united states)
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NCHS
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A ________ reviews death certificate and codes info for compilation, errors in coding possible
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nosologist
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In 1900, this agency was introduced and replaced by world health organization took over after WWII.
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International classification of Diseases
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in 1948 how many revision of ICD were we at?
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6th
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Today, what revision of ICD are we at?
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10th
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-Certificate of birth and fetal death
-nearly complete -used for epi studies of environmentally caused birth defect clusters |
Birth statistics
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-Public health surveillance
-Reportable and notifiable diseases -Healthcare providers--> local health departments--> state health departments--> centers for disease control -CDC reports internationally quarantinable disease to WHO such as plague, cholera, yellow fever |
Reportable disease statistics
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-this group tracks a few diseases of interest such as salmonellosis, shigellosis and influenza which is monitored from october through may
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CDC surveillance
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What are the four information sources of CDC surveillance?
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U.S. laboratories, moratlity reports from 121 us cities, sentinel physicians (150 family practice physicians), state epidemiologists
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This describes what aspect of reportable disease statistics?
*Incompleteness of population coverage: -case may not seek medical attention and is classified as asymptomatic or subclinical cases -Occasional failure of physicians/providers to report things such as change in requirements, MD-patient confidentiality, widespread and usual diseases underreported such as streptococcal pharyngitis, and sever/unusual diseases usually reported (diphtheria). |
Deficiencies
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What is the purpose of screening surveys?
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To identify persons with infectious or chronic diseases
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Large corporations and companies may use this type of screening method entailing more than one screens
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multiphasic screening
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What are the results of screening surveys?
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Early detection of health problems, Complication from chronic diseases reduced, employee life extended, data utilized by epidemiology
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These are centralized databases for collection of information about a specific disease especially cancer
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disease registries
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This uses scientifically designed surveys of representative sample of a population and their goal is to gather more comprehensive information than routinely collected
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Morbidity Surveys of General population
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What are the three different programs by NCHS?
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NHANES 1 (national health and nutrition examination survey)
NHANES 2 HHANES (hispanic health and nutrition examination survey) |
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This provides baseline measurements on characteristics not available for a defined population such as physical, physiologic, psychologic
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Health examination survey
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This type of data:
-Statistics from: -social security -health insurance -life insurance |
Insurance data
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this type of data:
-hospitals implementing electronic health records--> data incorporated into electronic databases -permits sharing of information among providers -contributes to population health research |
Hospital data (inpatient and outpatient)
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