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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 * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

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