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st: New and revised packages on SSC


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: New and revised packages on SSC
Date   Mon, 9 Dec 2002 14:49:24 -0000

Thanks to Kit Baum, various packages of mine have 
just been added to or revised on SSC. To install 
or reinstall a generic package <pkgname>, use 

. ssc inst <pkgname> 

or 

. ssc inst <pkgname>, replace 

For explanation of -ssc-, please see the first 
URL under my signature. 

1. New: -ciw-: binomial confidence intervals 
for proportions using Wilson scores 

-ciw- computes standard errors and binomial confidence 
intervals for 0/1 variables. -ciwi- is the immediate 
form of -ciw-, for which specify the number of observations 
and the number of successes. With both commands confidence 
intervals are calculated as Wilson score intervals.

Much more detail is given in the help. 

Stata 7 is required. 

2. Revised: -cij-: binomial confidence intervals 
for proportions using Jeffreys prior 

-cij- computes standard errors and binomial confidence intervals
for 0/1 variables. -ciji- is the immediate form of -cij-, for which
specify the number of observations and the number of successes.
With both commands confidence intervals are calculated based on
the Jeffreys uninformative prior of a beta distribution with
parameters 0.5 and 0.5.

Stata 7 is required. 

What is new: more detailed discussion in help. 

3. Revised: -distplot-: distribution function plots 

-distplot- produces a plot of the cumulative distribution 
function(s) for the variables in varlist. This shows the
proportion (or if desired the frequency) of values less 
than or equal to each value.

This was last published in STB-51 in 1999. 

Stata 7 is required. 

What is new: Roger Harbord reported 
on Statalist that -distplot- with a varlist 
could not be coupled to a call to -symbol([varname])- 
if varname was not included in varlist. 
This is fixed. Thanks to Roger to pointing 
out the problem, and indeed to indicating 
an alternative approach. While fixing this, 
I have updated code and help to Stata 7. 

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