3 ways PH programs can intervene
Provide examples.
Policy/Structural
E.g., Fluridate water, treat sewage, outlaw transfat
Incentives & Disincentives
E.g., fine for not wearing seatbelts, tax cigs, require immunization
Volitional Behavior
E.g., Excercise, sleep under bednets, use contaceptives
Questions we want to answer with/from our program
Did it work?
Achieve intended outcomes?
Types of Eval: Efficacy & Effectiveness
**Efficacy — ideal conditions **
*RCT, well-resourced program, ‘pilot’ projects. E.g., plenty of staff, time and money to train and pay for people’s time, very tight controls, high standardization assured.
**Effectiveness — real world conditions **
*more variation – in who’s delivering, who’s getting, in what is delivered; less control and standardization; fewer resources.
Difference between 2 types of evalution: Outcome v. Process Evals
**Outcome Eval **
Focuses on efficacy or effectiveness
Process Eval
Focuses on what elese we want to know
What evaluation does PH prioritize?
OUTCOME
Outcome over process eval
Within outcome evaluaitons – efficacy over effectivess
Bottom Line: If we focus on efficacy…
Narrow focus on efficacy can obscure serious issues related to reach and adoption
Bottom Line: If we focus on outcomes…
Narrowly defined outcomes can mask key issues about implementation and quality of services
Note: Implementation and quality issues are usually defined as ‘process’ and therefore tend to receive less attention. But outcomes can (and should?) be defined to incorporate these ‘additional’ program elements for full public health achievement.
What are the steps of the RE-AIM framework?
REACH
-reach intended recipients?
EFFICACY & EFFECTIVENESS
ADOPTION
-adoped by target delievers (both program and staff)
IMPLEMENTATION
-implemented as intended
MAINTENANCE
What is a Logic Model?
Other names.
AKA:
What is the order, direction, of a common logic model?
Inputs > Activities > Outputs > Effect/Outcomes > Impact
Describe the causal pathway framework.
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Impact
Outputs
Outputs –> Effect –> Impact
-Good quality products and services that must be in place for effects to occur
-Product must be available for use
Inputs
Inputs –> Activities –> Outputs –> Effect –> Impact
Resources needed to support the activity
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Input
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Resources needed (does not specify quality)
Inputs –> Activities –> Outputs –> Effect –> Impact
Resources needed to support the activity
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Activity
Technical and support (active voice)
Activities –> outputs –> Effects –> Impact
Technical and support tasks required to produce the outputs
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Output
Quality products in place; influenced by activity (passive voice)
Outputs –> Effect –> Impact
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Effect
Are we BASK?
Knowledge, attitudes, skills, behavior (BASK in effects)
Effect –> Impact
Change in knowledge, attitudes, skills, behavior of population of interest
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Input
Change in health status
Change in health status of the population of interest
May also have socioeconomic benefits
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Trick for catergorizing certain causal pathway elements
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If in program – eliminates effect and impact
If in population – effect and impact
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From Re-Aim to Framework
Causal Hypothesis verbage (keywords/how write)
AKA: Theory of change
This intervention, a result of this set of inputs, activities and outputs, will facilitate these changes in the population, which will contribute to the desired impact.
Why use causal frameworks?
Why develop evaluate programs?
PH perspective (4).
Gold standard for efficacy? Why?
RCT — maximizes internal validitiy
Efficacy — ideal circumstances
Efficacy evals and internal validity
Internal validity refers to our degree of certainty that:
a) change in outcome variables due to intervention
or
b) lack of change due to failed intervention
What must an evaluation design include?
Counter-factual
A compariosn point indicating what would the outcome have been w/o the intervention