Hi Sara, thanks for the video. Can this analysis be applied to 3 measures? So I repeated a certain measures 3 time. regardless ICC, which other reliability analysis can I applied? Thank you for your replay.
I have a task in which I have to compare 2 methods using Bland-Altman. I have 2 replicates in each group. How am I supposed to plot a Bland-Altman curve with all of this? I generally dont have a hard time with excel, but this one has gotten the better of me.
Hi Calle. When you say you have 2 replicates in each group does that mean your have two measurements back to back, or two time points of the measurements?
Right click on the X-axis, click [format axis], scroll down on the left hand side to [labels] and then click the drop down and select [low]. This should then move the X axis to the bottom of the graph :)
what version of excel is this as I cannot seem to create the plot despite following everything you have said in getting the data in order.. I have version 2016
why did'nt you use the one-sample t-test before making the Bland-Altman plot? . As ı know, ıf there is significant difference between these two measurements, we cant perform the bland altman. ıt measns there is no useful level of agreemnent between two measurements
Hi Shephard. 95% of a normally distributed population lies within 1.96 standard deviations of the mean. 1.96 is the approximate value of the 97.5 percentile point of the normal distribution. Since we would expect most differences in bias to lie within 2 standard deviations, that's why 1.96 is chosen.... Limits of agreement is just 2 standard deviations from bias. I hope this helps!
She is just using these numbers (from 0 to 2500) just to draw the line making sure it is long enough to fit all the x data. Adjust this number to your range of data and you'll be ok.
Brilliant but towards the end my graph did not look like yours...lol...again be slow ...people like us just learned English the other day....I would love to see a graph having vertical value against horizontal value of the mean of measurements
Thank you so much! My pc is crazy and don't accept complements! so this tutorial save my day!thank you!!!
Thankyou, thankyou thankyou! Brilliant tutorial, finally understand and you've helped my assignment so much!
This was incredibly helpful! Thank you.
Thank you very much for posting this video. Very Helpful.
This was amazingly helpful, thank you so much for making this!!!
Sarah Purcell, Thank you very very much! you are great!
Thanks for the tutorial. It was awesome and really helpful
Hi Sara, thanks for the video. Can this analysis be applied to 3 measures? So I repeated a certain measures 3 time. regardless ICC, which other reliability analysis can I applied?
Thank you for your replay.
Thank you so much! This was very helpful :)
Thank you! Amazing tutorial!
where did you get the 2500?
Thank you, Good stuff.
Excellent, mega thanks
I have a task in which I have to compare 2 methods using Bland-Altman. I have 2 replicates in each group. How am I supposed to plot a Bland-Altman curve with all of this? I generally dont have a hard time with excel, but this one has gotten the better of me.
Hi Calle. When you say you have 2 replicates in each group does that mean your have two measurements back to back, or two time points of the measurements?
Can we also calculate the p value using this method?
very helpful thank you!
Thanks...
I have a question!
And how do you add the X axis to the bottom of the chart?
Right click on the X-axis, click [format axis], scroll down on the left hand side to [labels] and then click the drop down and select [low]. This should then move the X axis to the bottom of the graph :)
what version of excel is this as I cannot seem to create the plot despite following everything you have said in getting the data in order.. I have version 2016
Could you post the interpretation that you got from this plot? I am having a hard time reading it
how do you calculate the 95%coefficient interval please help
why did'nt you use the one-sample t-test before making the Bland-Altman plot? . As ı know, ıf there is significant difference between these two measurements, we cant perform the bland altman. ıt measns there is no useful level of agreemnent between two measurements
so useful
Hi Sarah, kindly advice on Stan Dev how did you get (1.96) again i am new in this learning through youtube.
Hi Shephard. 95% of a normally distributed population lies within 1.96 standard deviations of the mean. 1.96 is the approximate value of the 97.5 percentile point of the normal distribution. Since we would expect most differences in bias to lie within 2 standard deviations, that's why 1.96 is chosen.... Limits of agreement is just 2 standard deviations from bias. I hope this helps!
HEY SARA WHERE DID YOU GET THE 2500?//
She is just using these numbers (from 0 to 2500) just to draw the line making sure it is long enough to fit all the x data.
Adjust this number to your range of data and you'll be ok.
hello Sarah, the standard deviation (142) is the SD of the mean or the differences?
That is the standard deviation of the differences
+Sarah Purcell thanks
Thank you
Thanks!
Brilliant but towards the end my graph did not look like yours...lol...again be slow ...people like us just learned English the other day....I would love to see a graph having vertical value against horizontal value of the mean of measurements
Great video, but the sound is terrible.. :( :(
no x Axis :(
where did you get the 2500?