Clclinical trial analysis Flashcards
1
Q
Hazard ratio definition
A
Probability of an event at a particular time point – given that the individual has survived to that timepoint without the event
2
Q
Risk
A
number of events/total number of people
3
Q
Rate
A
number of events/units (e.g. years) of time
4
Q
Ratio
A
Divide values for treatment group by values for control group
Value for no difference is 1
5
Q
Difference
A
Subtract values for treatment group from values for control group
Value for no difference is 0
6
Q
Hypothesis tests - binary categorical variables
A
Time to event data:
Survival analysis (Kaplan Meier), log rank test
Cox regression
Single timepoint data:
Chi square test (z test)
Logistic regression
7
Q
A
