Thank you for the video, can you help me how to prove that is unbiased in this question? Question: Compare the average height of employees in Google with the average height in the United States, do you think it is an unbiased estimate? If not, how to prove it is not matched?
If the concordance index is less for example c-index 0.5. How we can improve this concordance index in R language? If we used optimisation method then which parameters we need to used in Coxph function. Thank you.
The term "evidence-based" is now a dated term and is based on the medical model of health. The term "evidence-informed" is preferred b/c it not only depends on published evidence, but professional opinions, best practice guidelines (e.g., for COVID-19, Ebola) that often are fluid and evolving in nature, community partners and stakeholders (e.g., Indigenous elders). Cheers, Dr. Wally J. Bartfay
Confusing in this matter (see previous video too) is it uses two concepts of time, one as an interval and one as a point in time (deaths occur between, say, t=0 and t=1, but the numbers are treated as if the are a point in time; Nt is acually the number at t=0, the risk ending at t=1, so until, not on t=1). Even more confusing is the textbook using t+1 in formulas, instead of t-1 (which this video does, and imo is the right way). You see this in the (excell) examples, where N0=N1. What happens between 0 and 1? But, nice, clear video.
To be more specific: a t=1 you inventarise your deaths and censoreds that happened between t=0 and t=1 and relate them (strictly) to the N at risk, which is N0, the number that were there at t=0 (which is called N1 for convenience). But I understand it's a matter of convention. It makes reproducing (copuing) tables not too hard, but if you try to make one from scratch, like I did, you get stuck. Video like this come in more than handy, they are necessary imo.
awesome!!!
too small writing's its difficult to see
very helpful
Very good explanation and thanks!
Very clear. Thank you so much
This is exciting. It contains huge among of interesting data. How do I pull down this data? Is there a link?
Thank you for the video, can you help me how to prove that is unbiased in this question? Question: Compare the average height of employees in Google with the average height in the United States, do you think it is an unbiased estimate? If not, how to prove it is not matched?
Your video is so perfect 💕
Continue uploading videos mam
Thank you. Girl.
Where is first video?
THANK YOU FOR YOUR GREAT EFFORT
Super helpful! Thank you!
VERY helpful! Thank you!
Thank you
Thanks so much. Very helpful 👍
If the concordance index is less for example c-index 0.5. How we can improve this concordance index in R language? If we used optimisation method then which parameters we need to used in Coxph function. Thank you.
Are you ready for a ride ?
Thank you for that - very succinct and digestible explanation of the Bradford-Hill criteria. Cheers
What program are you using here?
The term "evidence-based" is now a dated term and is based on the medical model of health. The term "evidence-informed" is preferred b/c it not only depends on published evidence, but professional opinions, best practice guidelines (e.g., for COVID-19, Ebola) that often are fluid and evolving in nature, community partners and stakeholders (e.g., Indigenous elders). Cheers, Dr. Wally J. Bartfay
Thanks Lori , its really well explained
Can you tell us the name of the book you are using? Thank you
Hai Lori, can youu make a subtitle in indonesian language?
Thank you so much, you explain it in such an understandable way
thanks kori
Thank you so much for this clear explanation
Excellent teacher with a beautiful voice!
Confusing in this matter (see previous video too) is it uses two concepts of time, one as an interval and one as a point in time (deaths occur between, say, t=0 and t=1, but the numbers are treated as if the are a point in time; Nt is acually the number at t=0, the risk ending at t=1, so until, not on t=1). Even more confusing is the textbook using t+1 in formulas, instead of t-1 (which this video does, and imo is the right way). You see this in the (excell) examples, where N0=N1. What happens between 0 and 1? But, nice, clear video.
To be more specific: a t=1 you inventarise your deaths and censoreds that happened between t=0 and t=1 and relate them (strictly) to the N at risk, which is N0, the number that were there at t=0 (which is called N1 for convenience). But I understand it's a matter of convention. It makes reproducing (copuing) tables not too hard, but if you try to make one from scratch, like I did, you get stuck. Video like this come in more than handy, they are necessary imo.
Thanks a lot.nice presentation
Wow thanks so much! This help me create the table for future use! Awesome explanation!!!
Excellent teacher! Thank you!
Thanks Dr Lori Can you please show us how to do the confidence intervals for the life table? thanks
Nice! Thank you !
really thank you very much
Question: do all the observations need to have started the same time?
no its not that all should enter at the same time, observations could start at any time, just need to follow them till event occurs
@@SSReactions OK, this is helpful thank you for posting the video - saved my life!
Or reliaed that this wasn't your video, but thanks for the reply!
Ani Gasparyan hi I’m a biostatisticians
Crisp and clear as always. I like your presentations very much.
Beautiful voice
lori very nice good voice. looking very tried
Thanks so much. This is very helpful ! :-)!
nice video
good
The book is called “Essentials of Biostatistics in Public Health” by Sullivan. You’re welcome
thank you, sir
do you useful lectures written?
Hey I pulled a book out of my ass but couldn't find the chapter you are talking about.
what is the book that your are referring to ?
Yeah ! Which book is she referring to?
Please make also a video about hypothesis testing and P-values if it is possible. It would be really helpfull :)
Awesome explanation,recommend to all
Thanks for the great video.
Is anyone else having trouble hearing the voice?
ppeetteerr123 i could hear it. Maybe try it on your iPad or computer. Phones cause trouble at times.
I like the focus on how to learn.