[R-sig-Epi] need help in calculating confidence intervals forsensitivity, specificity, PPV & NPV
BXC (Bendix Carstensen)
bxc at steno.dk
Fri Feb 29 21:16:45 CET 2008
The sensitivity, specificity and predictive values are just proportions,
so yoiu can use the function binom.test() to get exact confidence
confidence intervals.
Best,
Bendix
> -----Original Message-----
> From: r-sig-epi-bounces at stat.math.ethz.ch
> [mailto:r-sig-epi-bounces at stat.math.ethz.ch] On Behalf Of
> Smita Pakhale
> Sent: 29. februar 2008 20:34
> To: r-sig-epi at stat.math.ethz.ch
> Subject: [R-sig-Epi] need help in calculating confidence
> intervals forsensitivity, specificity, PPV & NPV
>
> Hello,
>
> I am a physician and a novice in R.
>
> I am trying to calculate sensitivity, specificity, positive
> predictive and negative predictive values. I could do that
> using the package caret. However, I need to get confidence
> intervals around these estimates and I do not know how to do that.
>
> Please help me find a way to calculate confidence intervals
> for these parameters.
>
> thank you.
> Sincerely,
> Dr. Smita Pakhale
>
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