Introduction to Pharmacoeconomics Part 2 Flashcards
(43 cards)
What is the main aim of clinical research?
Determine efficacy
What is the main aim of outcomes research?
Determine effectiveness
What is the main aim of pharmacoeconomics?
Determine efficiency
What is the study design of clinical research?
Randomized clinical trials
What is the study design of outcomes research?
Observational studies and randomized clinical trials
What is the study design of pharmacoeconomics?
Economic analyses based on outcomes and clinical trials
What is the main measure of clinical research?
Efficacy and safety intermediate end points
What is the main measure of outcomes research?
Patient-related outcomes
What is the main measure of phamacoeconomics?
Cost and outcomes
What is the time frame of clinical research?
Short term
Ideal (not actual) clinical practice
What is the time frame of outcomes research?
Long term
Actual clinical practice
What is the time frame of pharmacoeconomics?
Long term
Actual clinical practice
What are some ADVANTAGES of prospective observational analysis?
Flexible
Provider-specific data
Reflects usual care
Offers comparative data
Less $ than RCTs
Prospective (a benefit and drawback!)
What are some DISADVANTAGES of prospective observational analysis?
Expensive
Difficult to control and randomize
Potential for patient selection bias
Small sample size
Difficulty generalizing results to other providers
Longer timeframe
What are some ADVANTAGES of retrospective database analyses?
Has potential for large sample size
Can provide data quickly
Customer specific
Reflects ‘actual care’ or effectiveness
Relatively inexpensive
Shorter timeframe
Data collection is unobtrusive
What are some DISADVANTAGES of retrospective database analyses?
Retrospective
Inconsistent coding
Variations in database quality among managed care plans
Inconsistent access to pharmacy versus medical claims
Inability to randomize patients to treatment
(At the whims of the system)
_______, _______ and ________ of resources is necessary to predict the pharmacoeconomic value?
Identification - identify the resource and any variables
Measurement - count resource in units service required to produce benefit. How are resources measured?
Valuation - market value of goods and services (theoretically the opportunity costs)
What are CLINICAL outcomes in pharmacoeconomics?
Therapeutic outcomes, controllable by a RPh. Use clinical indicators to measure. Death is a clinical outcome too!
What are ECONOMIC outcomes of pharmacoeconomics?
Direct medical resources
Health-related QoL
Patient satisfaction
Reduced hospital stay
When identifying outcomes of interest (economic, clinical, humanistic) we must account for the __________ of all these outcomes
Multidimensionality
What are three possible study designs?
- Experimental
- piggyback RCTs
- Economic clinical trials - Observational designs
- Claims analysis - Simulation designs
- machine learning, computer simulated
+ Combo designs
What may become barriers to the VALIDITY of a study?
Biases!
Internal
Patient selection bias
Crossover bias
Errors in measurement of outcomes
Errors in ascertainment of exposure to technology
External
Differences among people studied versus people with whom the results will be applied
How might we resolve possible ethical issues?
Prospective:
- BEFORE start, ensure all pts are not at risk and have full consent
Retrospective:
- Institutions should be allowed to review study protocol, contact IRB members for clarification
What is involved in conducting a pharmacoeconomic evaluation? Why might one be done?
May be done if:
- Insufficient literature
- Published results cannot be extrapolated to clinical practice,
- Building a model is not appropriate
COSTLY! Save this for only if there’s significant impact
(Retrospective database studies are far more common now