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# st: RE: RE: a "byable" cii

 From VISINTAINER PAUL To "'statalist@hsphsun2.harvard.edu'" Subject st: RE: RE: a "byable" cii Date Thu, 6 Feb 2003 17:37:02 -0500

```Thank you, Nick.  Re Bryan: the spreadsheet would have worked if the samples
were large.  However, with the options provided by -ci-, it was worth the
time to figure out how to use it.

Paul

-----Original Message-----
From: Nick Cox [mailto:n.j.cox@durham.ac.uk]
Sent: Thursday, February 06, 2003 3:12 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: RE: a "byable" cii

VISINTAINER PAUL
>
> I was recently asked to compute confidence intervals for
> several proportions
> (more than 100).  The data came in a spreadsheet in two
> columns: numerator
> (num) and denominator (den).  I thought I could quickly run
> them using
> either ci or cii.  However, it appears that ci doesn't read
> summary data and
> cii is not "byable".  Despite my best efforts, I couldn't
> devise a program
> that would read more than the first line of the data.
>
> My very inelegant solution to the problem was this:  I
> converted the two
> columns of data into a single row of data with 200 columns:
>  (e.g., num1
> num2 . . . num100 den1 den2 . . . den100).
>
> Then I ran the following program:
>
> 	forvalues x=1/100 {
> 	  cii den`x' num`x'
> 	}
>
> While it worked, it was really cumbersome converting the
> data.  I suspect
> (hope) there is an easier way to do this.  Any suggestions?

forval i = 1/100 {
local n = num[`i']
local d = den[`i']
cii `d' `n'
}

Nick
n.j.cox@durham.ac.uk
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```

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