B
BrQ
Good morning all,
Looking through the threads for testing the viabilty of a replacement measuring system has proved very helpful to a point.
I have concluded that a Youden plot and a Bland Altman plot seem to be the best tools for the job.
Was wondering if I might get some confirmation on my analysis of the two methods.
Please reference the attachments below
On the Bland Altman, there is only 1 point outside the limits of agreement, yet the dispersion of the data is wider than I would like to see.
Is the fact that is is somewhat equally distributed between upper and lower an indication that this would be a decent replacement?
Have done research on interpreting this method and still feel that I'm missing something in the analysis.
On the Youden plot, how much deviation from the 45 degree line is acceptable? I do understand that the interpretation for these are clinical more than a black and white statistical inference so I would like some second opinions / any advice that might help draw conclusions.
Same as above, I have researched this and still feel like I have not come to the concrete determinations that I would like.
Find the cove to be an invaluable resource, spend alot of time on here finding answers, any help on this particular issue would be greatly appreciated.
Looking through the threads for testing the viabilty of a replacement measuring system has proved very helpful to a point.
I have concluded that a Youden plot and a Bland Altman plot seem to be the best tools for the job.
Was wondering if I might get some confirmation on my analysis of the two methods.
Please reference the attachments below
On the Bland Altman, there is only 1 point outside the limits of agreement, yet the dispersion of the data is wider than I would like to see.
Is the fact that is is somewhat equally distributed between upper and lower an indication that this would be a decent replacement?
Have done research on interpreting this method and still feel that I'm missing something in the analysis.
On the Youden plot, how much deviation from the 45 degree line is acceptable? I do understand that the interpretation for these are clinical more than a black and white statistical inference so I would like some second opinions / any advice that might help draw conclusions.
Same as above, I have researched this and still feel like I have not come to the concrete determinations that I would like.
Find the cove to be an invaluable resource, spend alot of time on here finding answers, any help on this particular issue would be greatly appreciated.