Thank you Professor for your lifetime of work, it's been a staple of my diet as a pharmacology student at UCL. And of course, thank you for fighting pseudoscience wherever and whenever you see it.Truly awesome!
Thank you so much Prof. Colquhoun. I am studying on analysis methods of biological screens and came across this video. This is really helpful to having a more precise understanding of what p value is and what kind of mistakes we will make if using it inappropriately.
The screening might well do more harm that good. It depends on what action is taken when a positive diagnosis is obtained during screening. If a positive diagnosis turns out to be a false positive and it results in a patient undergoing unnecessary surgery, or unpleasant chemotherapy, that's serious.
There is now a version of this video with better volume for most of the soundtrack, thanks to editing with Lightworks. See ruclips.net/video/jZWgijUnIxI/видео.html
I made a ratio version of FPR calculater. www.tutorialspoint.com/execute_r_online.php?NGsTgJ it needs package 'pwr' to execute, but graph is shown without it. I am afraid there are many bug in it, due to my poor understanding.
Your sound is set very low, for the bulk of this video. Only the intro and the excerpt of Kristin Lennox were what i'd call 'reasonable' so i turned the volume on my speakers up. If the Liberty Bell March hadn't been set low too, i might have jumped out of my skin :-D P.S. RUclips recommends i watch a video called "Fakes in the art world - The mystery conman" after this one. I wonder how on Earth they come up with values for the prior probability that a sculpture, or painting, were genuine in progeny, in the world of art. What a statistically-scary thought :-/
Yes, I know. It's the loudest I could get with Powerpoint 2010 (using headset) and Moviemaker, with volumes set to maximum. I blame Microsoft. It's perfectly audible on my desktop, but you'd need a quiet room on my mobile (though trying to read the slides on a mobile would not be sensible anyway).
That'll be the problem. I gave up using Movie Maker, years ago. From what i've read, even the free video editors can do more than Movie Maker does. I spent £40 on a now-defunct Magix program, but it still works, and i've never had any trouble with the basics of volume and image quality. It might be worth giving a modern equivalent some consideration.
I think that the problem lies with Powerpoint, rather than Movie Maker. I apologise to anyone who's a bit deaf. All that most people have to do is to turn up the volume. More to the point. I'd welcome comments on the actual content of the talk.
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Thank you Professor for your lifetime of work, it's been a staple of my diet as a pharmacology student at UCL. And of course, thank you for fighting pseudoscience wherever and whenever you see it.Truly awesome!
Thank you so much Prof. Colquhoun. I am studying on analysis methods of biological screens and came across this video. This is really helpful to having a more precise understanding of what p value is and what kind of mistakes we will make if using it inappropriately.
Thanks you. I'm delighted if you found it useful.
26:26 all the positives gives true risk; what's the denominator?
17:15 what if 99% are not that impacted by a diagnosis, but you roll out large screening tests.
The screening might well do more harm that good. It depends on what action is taken when a positive diagnosis is obtained during screening. If a positive diagnosis turns out to be a false positive and it results in a patient undergoing unnecessary surgery, or unpleasant chemotherapy, that's serious.
There is now a version of this video with better volume for most of the soundtrack, thanks to editing with Lightworks. See ruclips.net/video/jZWgijUnIxI/видео.html
I made a ratio version of FPR calculater.
www.tutorialspoint.com/execute_r_online.php?NGsTgJ
it needs package 'pwr' to execute, but graph is shown without it.
I am afraid there are many bug in it, due to my poor understanding.
Your sound is set very low, for the bulk of this video. Only the intro and the excerpt of Kristin Lennox were what i'd call 'reasonable' so i turned the volume on my speakers up. If the Liberty Bell March hadn't been set low too, i might have jumped out of my skin :-D
P.S. RUclips recommends i watch a video called "Fakes in the art world - The mystery conman" after this one. I wonder how on Earth they come up with values for the prior probability that a sculpture, or painting, were genuine in progeny, in the world of art. What a statistically-scary thought :-/
Yes, I know. It's the loudest I could get with Powerpoint 2010 (using headset) and Moviemaker, with volumes set to maximum.
I blame Microsoft.
It's perfectly audible on my desktop, but you'd need a quiet room on my mobile (though trying to read the slides on a mobile would not be sensible anyway).
That'll be the problem. I gave up using Movie Maker, years ago. From what i've read, even the free video editors can do more than Movie Maker does. I spent £40 on a now-defunct Magix program, but it still works, and i've never had any trouble with the basics of volume and image quality. It might be worth giving a modern equivalent some consideration.
I think that the problem lies with Powerpoint, rather than Movie Maker. I apologise to anyone who's a bit deaf. All that most people have to do is to turn up the volume.
More to the point. I'd welcome comments on the actual content of the talk.