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104 Cards in this Set
- Front
- Back
Community Health Practice vs. Private Practice
Community Health Practice 1. survey and Needs assemment <--> 2. data analysis <--> 3. program planning <--> 4. program operation <--> 5. funding <--> 6. appraisal or evaluation <--> |
Community Health Practice vs. Private Practice
Private Practice <--> 1. health history and examination <--> 2. diagnosis <--> 3. treatment planning <--> 4. treatment <--> 5. payment <--> 6. evaluation |
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Four Gov. Levels of Community Dental Health
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1. International (WHO - world health organization)
2. Federal - national significance (DHHS- dept. of health and human services) <-- published Healthy People 2012 ex: CDC (atlanta, ga) 3. State (state wide) 4. Local (county and city programs) ex: fluoridationa |
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Epidemiology
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#s!
measured quantitatively |
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prevalence
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estimated population of poeple who are managing a disease at *any given time*
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Incidence
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new cases of a particular disease *diagnosed each year
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Uses of Epidemiology
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* collecting data to describe normal biological processes
*understanding the natural hystory of a disease process * measuring the distribution of a disease in a given population * identifying determinants of dease *testing hypotheses for prevention and control of a diease through studies *planning and evaluating healt care services |
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Epidemic
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unexpectedly large number of cases of diseaes in a particular population at a particular place and time
Ex: menigitis outbreak among senior hs students enrolled at Borah High School during fall quarter 2010) |
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Endemic
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a disease that occurs regularly in a population as a matter of course
ex. hay fever during spring |
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pandemic
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an outbreak of disease over a wide geographical area (often worlwide)
ex: worldwide swine flu scare |
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Descriptive studies
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determines *who* is getting the disaese *where* and *when* the disease is occuring
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Experimental studies
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test *hypothesis* to establish CAUSE
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null hypothesis
(experimental studies) |
("H0" researcher prefers a null hypothesis)
researcher tries to disprove or nullify *** ex of H0: Daily flossing does not lower interproximal caries rates |
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alternative hypothesis
(experimental studies) |
"H1" al alternate way to the explain the phenomenon
ex of H1: Daily flossing decreases interproximal caries rates |
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Control Groups
(experimental studies) |
experimental treatment is withheld: test subjects receive *placebo*
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Treatment groups
(experimental studies) |
receive experimental treatment
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blindness
(experimental studies) |
researcher is unaware of whether the subject is in the control or treatment group during the study
***helps prevent bias*** |
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double blinded
(experimental studies) |
NEITHER researcher nor subject knows who is receiving experimental treatment
***BEST way to prevent bias*** |
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Analytical studies - three types
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aimed at testing hypotheses
1. Retrospective (case-control) study - back in time 2. Prospective study - go into future 3. Longitudinal study - long period of time (1 week-10 years) |
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Random sample
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every element in the population has an EQUAL chance of being selected (reduces chance of bias)
ex: pick names out of a phone book |
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Stratified sample
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selecting an element according to certain subgroups
ex: identify all of the dental hygiene schools attending this board review and select two members from each school |
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systematic sample
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select every 'nth' to participate
ex:count off by 6 and then form groups based on like numbers |
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Judgment sample
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someone familiar with the population selects the sample
HIGH chance of bias!! ex: your class president selects fellow students to be in one of four table clinic groups |
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Convenience sample
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sample group is chosen based solely on conveniance
ex: the first 10 people to walk through the door today were asked to fill out a questionaire |
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Variables
(two types) |
what is being observed or measured
1. dependent variable 2. independent variable |
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dependent variable
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outcome of interest
change in response to some intervention (the DEPENDent variable DEPENDS on the independent variable) |
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independent variable
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the intervention
manipulated to produce a response ('In' is in BOTH INdependent and INtervention) |
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Descriptive Statistics
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Measures of Central Tendency
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data matrix
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arranges data scores from lowest to highest measures
pg. 95 |
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frequency of distribution
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how often each score occurs
pg. 95 |
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ungrouped scores
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data is presented in ascending or descending order along with the frequency of each score
just count how many people have each score pg. 95 |
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cumulative scores
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frequency of occurence of scores up to and including any given value
pg. 95 |
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grouped scores
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consecutive intervals (ex: grading)
pg. 95 |
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Measures of Central Tendency
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x-y graph
the mean, the median, and the mode |
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mean
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average
most common measure of central tendency*** **sensitive to extreme values (range) |
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median
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divides the distrubition of scores into two equal parts
50% of scores will be above the median; 50% will be below **NOT affected by extreme high or low scores |
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Mode
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*BOARD FAVORITE*
MOST frequently occuring score Affects the skew |
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When data is plotted using a NORMAL curve, the mean, median, and mode are _______!
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EQUAL!
* a noraml curve is a "bell" or "gaussian" |
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Measures of Dispersion
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describe how WIDE the scores are around a contral point (in a normal curve, the central point would be the mean, median, and mode)
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Range
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the difference between the high and low score of a data matrix ; affected by extremely high or low scores
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standard deviation
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Most commonly used method of dispersion in oral hygiene reasearch and reflect the range within the data matrix
the bigger the rang or 'standard deviation' , the wider the distribution curve. |
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Positive skew
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when more scores fall in the lower range, the curve will have a positive skew when plotted
pg.99 |
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Negative skew
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when more sscores fallin the higher range, the curve will have a negative skew potted
pg. 99 |
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Validity
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does it answer the questions
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Reliability
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extent to which the method of measurement CONSISTENTLY performs
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two groups of examiner reliability
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intraexaminer reliability
interexaminer reliability |
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intraexaminer reliability
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consistent performancy by the SAME EVALUATIOR
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interexaminer reliability
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consistent performance BETWEEN different examiners is INCREASED by *calibration*
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Sansitivity
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diagnosis
presence of a disease |
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specificity
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absence of a diseaes
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Correlation Co-efficient
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determines strength of relationship between two variables
shows probable cause and effect given as a number between +1 and -1 (the closer the correlation co-efficient is to EITHER +1 or -1 (.8 for example) the stronger the correlation |
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positive correlation
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as the value of x increases the value of y increases
Direct association |
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negative correlation
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as the value of x increases the value of y decreases
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t-test
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statistical measure used to test the hypothetical difference between TWO mean scores
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ANOVA "Analysis of Variance"
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used when testing hypothesis
refers to the probability that a condition or circumstance would happen just by chance whithout experimental intervention standard of acceptability is 1 out of 20 or p-value of < or = 0.05 a p-value greater than 0.05 will affect study results (negatively) |
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Primary services
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preventive therapies (cleaning)
**sports mouth guard** |
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secondary services
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controlling a disease or condition after it occurs (periodontal therapy and composites or crowns)
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tertiary services
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replacing lost tissues (implants or bridges)
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Characteristics of an ideal index
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simple
valid reliable clear sensitive quantifiable objective accepted |
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Reversible
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can be resolved or reversed
(gingivitis) -measures- |
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irreversible
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CANNOT be resolved
(periodontal disease) -measures- |
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Simples
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presence or absence of disease
-measures- |
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Cumulative
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both past and present
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DMFT/DMFS
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decayed,missing,filled,Teeth / Surface
irreversible measures past and present caries experience in populations with adult dentitions (because they're capitalize) |
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deft
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decayed, need for extraction,filled teeth
irreversible measures observable caries experience in deciduous teeth ***does not take into account teeth that have been extracted or exfoliated due to past caries experience!*** |
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dft/ dfs
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decayed fiiled teeth / surfaces
irreversible measure observable caries experience in decidious teeth (because they're lower cased) |
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RCI
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root carries index
requires recession!!! |
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CAMBRA
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caries management by risk assesment
measures risk factors and manages them through minimally invasive procedures CDA's (california dental associations most well known for this. list *24 factors* seperate form for pediatric patients |
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GI
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gingival index
reversible based on severity versus extent individuals or study participants |
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SBI
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sulcular bleeding index
reversible detects EARLY signs of gingivitis short term trials |
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PDI
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periodontal disease index
both irreversible AND reversible RAMFJORD (can be aka Ramfjord index) |
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PI
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Periodontal Index
irreversible Russell questionable for validity (no CAL) - LIMITATIONS |
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PSR
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periodontal screening and recording
special probe - nehbors useful as a preliminary screening technique or large populations |
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CPITN
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community periodontal index of treatment needs
requires special probe |
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OHI-S
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Simplified Oral Hygiene Index
better for group measures oral hygiene status by assessing sub and supragingival plauqe and calcluas |
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P1I
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plaque index
reversible silness and low conjuction with the gingival index scores plaque thickness at gingival margin |
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PHP
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patient hygiene performance
reversible plauq after toothbrushing (how well patient performs) |
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VMI
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volpe-manhold index
used to test agents for plaque control |
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NEEDS ASSESSMENT!
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process by which the planner identifies gaps between what is and what ought to be
target population ***collects baseline data!!!**** |
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ways to conduct needs assessment
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direct observation
interview questionnair survey epidemiological surveys records,documents, charts |
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access to care issues
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need : type of care available
demand: type of care desired utilization: actual use barriers: obstacles which interfere with care |
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ways to observe ned
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through eyes of the PLANNER
objective through eyes of TARGET POPULATION subjective (what they want, may not be what they need) |
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Type 1 Examination method
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comprehensive examination usesing mouth mirror, explorere, lightlign, radiographs, study models, etc
not practical for most community programs |
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Type II examination method
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limitied examination including mouth mirror, explorer, lighing, radiographs if available
limits use in community |
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Type III Examination method
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mirror and lighting ONLY
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Type IV Examination method
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tongue depressor and lighting ONLY
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populations profile
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gathers info about target population
# of individuals who will take part geographical distribution of target population rate of growth in the community degree of urbanization ethnic language profile nutritional status standard of living amount and type of community services and utilities available profile of school system general health profile |
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Medicare
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elderly and disabled
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Medicaid
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poor
security act of 1965 |
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COBRA
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consolidation omnibus budget reonciliation act of 1985 continue temporary health care coverage (18 months)
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Block grants
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lump sum
use at discretion to meet a need |
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line item grant
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specifies where monies are to go
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Goals
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broad-based statment of desired outcome of a program
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objectives
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steps that must be taken
MUST BE MEASURABLE |
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Drafting a Plan
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develop a lesson plan and implementation strategy
****choose activities or procedures that have been successful in the PAST!!! No need to re-invent the wheel**** |
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external motivation
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promise of a reward (children)
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internal motivation
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change as a result of self awareness (adult)
BETTER predictor of behavior change |
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principles of teaching
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teach the way skills are to be used
establish goals and objectives evaluation need to be ONGOING (beginning to end) |
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formal delivery
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lecture, demonstration, discussion etc
active |
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informal delivery
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brochures, pamphlets, bullboards, video etc
passive |
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Stages of Learning
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Ugly Apes Sit In A Hut
unawareness awareness self-interest involvement action habit |
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Evaluation of a program
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program appraisal
analyses whether or not goals and objectives were met*** may be formal (written, pre and post test) or informal (questions audience during presentation |
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Evaluation must be continuous!!! from beginning to end!
you need _______ |
baseline data from the needs assesment to determine groups progress
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summative evaluation
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outcome evaluation
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formative evaluation
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conducted during the program
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