Module 8 Flashcards
(45 cards)
Intervention mapping: ten tasks; TASK 6,8,9
- Pilot or pretest, intervention prototypes to discover whether they are acceptable, feasible and affordable
- Refine and develop the intervention with those who will implement and experience it to optimize fidelity of implementation and effectiveness.
- Implement the intervention and identify and minimize embedding problems.
TASK 6- What is it, which studies are included, what is the primary outcome
- An intervention must be attractive, affordable, and contextually appropriate to be effective; otherwise, it won’t be adopted or implemented properly.
-Pilot or feasibility studies help address uncertainties before launching a full-scale intervention.
The point is to ask if something can be done
Primary outcome–identify barriers to implementation
what is a feasibility study?
assess acceptability, feasibility and affordability of an intervention
-recruitment practicality
-Study procedures
-resource available
-participant commitment
-data collection
-ethical and institutional barriers
-intervention timing and delivery
What is a pilot study?
Tests preliminary impacts of outcomes
-like feasibility study but done in a small scale intervention
-initial effectiveness
-participant experience
-retention and compliance
-measurement validity
unexpected outcomes
-comparison to control group
What is external pilot
A rehearsal of the mains study where the outcome data are not included as part of the main trial outcome data set.
What is internal Pilot
When the pilot phase forms the first part of the trial and the outcome data generated may contribute to the final analysis
what tool is used to refine an intervention
RE-AIM
what is step 7
Refine and develop the intervention with those who will implement and experience it to optimize fidelity of implementation and effectiveness.
RE-AIM: R
Reach
The absolute number, proportion, and representativeness of individuals who are willing to participate in a given initiative, intervention, or program.
RE-AIM: E
Efficacy: The impact of an intervention on important individual outcomes.
RE-AIM: A
Adoption: The absolute number, proportion, and representativeness of settings and intervention agents (people who deliver the program) who are willing to initiate a program.
RE-AIM: I
Implementation: The intervention agents’ fidelity (i.e., the degree of exactness with which something is reproduced) to an intervention’s key functions or components.
RE-AIM: M
- Maintenance: The extent to which a program or policy becomes institutionalized or part of the routine organizational practices and policies.
what is step 8
- Implement the intervention and identify and minimize embedding problems.
Go time!!
Once you’re in this stage it is not the time to make any changes, as this would greatly harm the intervention fidelity.
which are the two steps of the program evaluation
9.Evaluate efficacy by investigating whether the intervention shows evidence of changing targeted antecedents and behaviours.
- Evaluate effectiveness by testing the intervention in new contexts and scaling up to target new groups or populations
what is the difference between efficacy and effectiveness:
Efficacy: the performance of an intervention under ideal and controlled circumstances
-resource intensive
-highly selected and homogenous pop
Effectiveness: The performance of an intervention under ‘real world’ conditions
-real world everyday clinical setting
-heterogenous pop
What are the different designs of implimentation
Experimental
Quasi-Experimental
Nonexperimental
what is experimental design, what are the different methods
characterized by the random allocation of participants to different conditions
-Control of all variables with the exception of the one being tested; and the ability of the design to be replicated
-individually randomized controlled trials
-cluster randomized trial
Individually randomized controlled trials
- A study design that randomly assigns participants into an experimental group or control group as a means to compare one or more treatments/programs
Individually randomized controlled trials: pros and cons
-Pros: the gold standard test of intervention efficacy, minimizes bias, and standardized the intervention
-Cons:costly in terms of time and money, does not always reflect real life
Cluster Randomized Trials
Participants are randomized as groups rather than individuals
Cluster Randomized Trials: pros and cons
-Pros: reduces risk of intervention contamination and minimizes bias in estimates of effect size
-Cons: higher risk of selection bias and confounding factors
Ie. failure to ensure that an experimental group is representative of the target pop
what method is the gold standard to test intervention
Individually randomized controlled trials
what is Quasi-Experimental methods + different types
Similar to an experimental design, but lacks randomization
-Interrupted Time Series Design
-Natural experiments