I am writing an article about Fagan's nomogram. I want to add an example for calculation of post-test probability using Fagan's nomogram. I need an online tool for accurate presentation of pre-test probability and +ve Likelihood ratio on the nomogram.
If not possible, what is the best solution? Should i seek help from a graphic designer?
I found this one:
http://araw.mede.uic.edu/cgi-bin/testcalc.pl?DT=12&Dt=18&dT=4&dt=56&2x2=Compute
It works, but it doesn't look very nice. I would suggest you develop your own app using R and Shiny (http://shiny.rstudio.com/).
There is a `fagan.plot` function in the TeachingDemos package (http://www.inside-r.org/packages/cran/TeachingDemos/docs/fagan.plot) that could get you started with the app.
Good luck!
Are you on the meta-analysis for diagnostic test? In case of DTA, It is easy to use the STATA for fagan's nomogram.
In the other case, i am not sure. However if you find the nomogram on the google, you can easily check it.
I found this one:
http://araw.mede.uic.edu/cgi-bin/testcalc.pl?DT=12&Dt=18&dT=4&dt=56&2x2=Compute
It works, but it doesn't look very nice. I would suggest you develop your own app using R and Shiny (http://shiny.rstudio.com/).
There is a `fagan.plot` function in the TeachingDemos package (http://www.inside-r.org/packages/cran/TeachingDemos/docs/fagan.plot) that could get you started with the app.
Good luck!
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