00:01
In this we have been given different types of studies.
00:04
First, prospective study.
00:10
So in a prospective study, the outcome hasn't occurred at the initiation outcome hasn't occurred.
00:22
Outcome hasn't occurred at the initiation of that study.
00:29
At the initiation of that study.
00:32
Now next we have a randomized prospective perspective cohort study, a randomized prospective cohort study and in a randomized prospective cohort study the subjects are, subjects are randomly assigned for receiving control treatment or subjects are randomly assigned for control treatment.
01:03
For receiving the control treatment.
01:08
Next we have observational prospective cohort study.
01:14
Observational prospective cohort study.
01:21
Prospective cohort study where none of the subjects were cohort study and in this none of the subjects developed the disease and after observing them for a long period of time the data is collected.
01:34
So in this the data is collected after observing for a long period of time.
01:44
After observing for a long period of time...