Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
What is the definition of prognosis?
|
Prediction of the expected outcome of a disease with or without treatment
|
|
|
The greek definition of prognosis in greek is to come to know beforehand, how is this possible?
|
Use population data to make a prognosis
|
|
|
What are the 5 things that a prognosis should include (ideally)?
|
1) The variability in course relative to treatment options
2) A time reference 3) Risk of treatment-related death (or other untoward reaction) 4) Cost 5) Nature of benefit attainable |
|
|
What is the definition of case fatality rate?
|
% of patients w/ a disease who die of it
|
|
|
What is the definition of survival rate?
|
% of patients surviving a defined period of time from some point in the course of their disease
|
|
|
What is the definition of response rate?
|
% of patients showing some evidence of improvement after an intervention
|
|
|
What is the definition of remission rate?
|
% of patients entering a phase in which disease is no longer detectable
|
|
|
What is the definition of recurrence rate?
|
% of patients who experience a return of disease after a disease-free interval
|
|
|
What are the 2 questions that are the rationale for the life table?
|
1) What is the likelihood of surviving for x years after diagnosis
2) What is the likelihood of surviving another year, given that the patient has already survived for y years since diagnosis |
|
|
How do you calculte the cumulative probability of surviving different lengths of time?
|
It's a mutliplicative property so just multiple the probability of survival for each individual year
e.g. Probability of surviving 3 years= P1 x P2 x P3 |
|
|
What does a survival curve show
|
Cumulative survival over time
|
|
|
How do you compare multiple survival curves?
|
Steeper slope= worse survival
|
|
|
Why can the tail towards the right side of a survival curve be deceiving?
|
Beause as the population decreases even with the same survival rate it will look like a not very steep slope
|
|
|
What is the y-value of a survival curve?
|
Cumulative survival up to that time point
|
|
|
What does a survival curve show
|
Cumulative survival over time
|
|
|
How do you compare multiple survival curves?
|
Steeper slope= worse survival
|
|
|
Why can the tail towards the right side of a survival curve be deceiving?
|
Beause as the population decreases even with the same survival rate it will look like a not very steep slope
|
|
|
What is the y-value of a survival curve?
|
Cumulative survival up to that time point
|
