Last attempt Flashcards
What are the advantages of a generic HRQoL measure?
Broadly applicable
Summarizes a range of concepts
May detect unanticipated effects
What are advantages of a disease-specific HRQoL measure?
More relevant for specific populations
More responsive to change in health
What are dis-advantages to a generic HRQoL?
May not be responsive to changes in health
May not be relevant for specific populations
Results may be difficult to interpret
What are disadvantages to a disease-specific HRQoL measure?
Cannot compare across population
Less likely to detect unanticipated effects
What is content validity?
Extent to which a set of items reflects content domain
A scale has content validity when items are randomly chosen subset of the universe of appropriate items
Usually have experts review for relevance
What is criterion-related validity?
If the scale has an association to “gold standard”
What is another name for criterion-related validity?
Predictive validity
What is construct validity?
Measures theoretical relationship of a variable to other variables
What is reliability?
Proportion of variance attributable to the true score of the latent variable
Consistently measures same result
What is internal consistency reliability?
Measures homogeneity of items w/in a scale
What is a latent variable?
Unobservable phenomenon that takes on a specific value under a set of conditions
What is a true score?
A scale developed to measure a latent variable that is intended to estimate its actual magnitude at the time & place of measurement for each subject
Which cost analysis is the most difficult, time consuming and expensive economic evaluation?
CUA
Why is CUA so difficult?
Difficult to derive QALYs
