I'm a US medical student studying for my boards, and found this explanation extremely helpful. Clear and to the point -- plus I love Prezi! Thank you for creating this.
I have a question: in a case-control study, does the matched control group need to have the same or similar number of elements as the test (with tennis elbow in this case)? Thanks!
Hello there, thank you for the video. Can y expain where you got 1.96 from? And then do you multiple 0.857 +/- 1.96 by 0.306? Also can you show calculation of 0.257 and 1.458? Many thanks for your help.
Very informative video and thank you. One major point about the required sample size was missing. Could you explain the required minimum sample size that derives from the population of size 505 for this study at 80% power (alpha = .05)?
Actually he just needed to calculate the standard error to find the margin of error then +- the sample statistic (odds ratio) and create a confidence interval.
hi excelent video but I just have a doubt. When you calculated confidence intervals how did you get the" log (odds ratio)"? if you can explain that would be very useful.
He got the log because he wanted it to be aprox. normal, so he can do statistics with it (u=0). Otherwise would be an assymetric dist. If odds ratio was 1, then playing tennis single handed would not increase the odds of developing Tenis Elbow. But it is greater than 1 even with the confidence interval, so we can say it increases the risk by playing single handed.
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I'm a US medical student studying for my boards, and found this explanation extremely helpful. Clear and to the point -- plus I love Prezi! Thank you for creating this.
Excellent! The best clip I have seen on this topic.
Excellent video. Especially good on why you can only calculate odds ratios in case-control studies.
I really admire illustration using a large diagram with scoops in and out, it really helped understanding the topic.
many thanks to you good sir!
Learning about odds ratio and risk ratio in my Evidence Based Practices class, and this is very useful information!
Love your videos mate.
Brilliant mate. I'm studying for my exams as well and this was illuminating!
it makes the concept very clear, thanks
Marvellous
very helpful, nice job ...
Fantastic explanation thanks 👍
Dude, who are u? You are opening the black box of a good education to all of us
Great video
I have a question: in a case-control study, does the matched control group need to have the same or similar number of elements as the test (with tennis elbow in this case)? Thanks!
Hello there, thank you for the video. Can y expain where you got 1.96 from? And then do you multiple 0.857 +/- 1.96 by 0.306? Also can you show calculation of 0.257 and 1.458? Many thanks for your help.
Very informative video and thank you. One major point about the required sample size was missing. Could you explain the required minimum sample size that derives from the population of size 505 for this study at 80% power (alpha = .05)?
Actually he just needed to calculate the standard error to find the margin of error then +- the sample statistic (odds ratio) and create a confidence interval.
hi excelent video but I just have a doubt. When you calculated confidence intervals how did you get the" log (odds ratio)"? if you can explain that would be very useful.
He got the log because he wanted it to be aprox. normal, so he can do statistics with it (u=0). Otherwise would be an assymetric dist. If odds ratio was 1, then playing tennis single handed would not increase the odds of developing Tenis Elbow. But it is greater than 1 even with the confidence interval, so we can say it increases the risk by playing single handed.
Could you give a quick tutor on converting between log and ln on a calculator (app)?
very clear
I used to get street fighter 2 elbow. Sucks bruh