Stata Technical Bulletin 26
table of contents

crc39: How to make older ado-files work correctly
crc40: Correcting for ties and zeros in sign and rank tests
dm31: Counting missing values an extension to egen
Author: Richard Golstein
dm32: Matching names in Stata
Author: Peter Sasieni, Imperial Cancer Research Fund, London, UK
dm33 Elapsed days using 30-day months
Author: Ken Heinecke, Century Investment Management Corporation
dm34: Constructing axis labels for dates
Author: Sean Becketti, STB Editor
ip8: An enhanced for command
Author: Patrick Royston, Royal Postgraduate Medical School, London, UK
sg35.1: Robust tests for the equality of variances: correction
Author: Mario A. Cleves, Arkansas Foundation for Medical Care
sg37.1: Orthogonal polynomials: correction
Author: William M. Sribney, StataCorp
sg40: Testing for the mean of a skewed variable
Author: Richard Goldstein, Qualitas, Inc.
sg41: Random-effects probit
Author: William M. Sribney, StataCorp
sg42: Plotting predicted values from linear and logistic regression models
Author: Joanne Garrett, University of North Carolina
snp6.1: ASH, WARPing, and kernel density estimation for univariate data
Authors: Isaias Hazarmabeth Salgado-Ugarte, University of Tokyo, Faculty of Agriculture, Department of Fisheries, Japan
Makoto Shimizu, University of Tokyo, Faculty of Agriculture, Department of Fishe ries, Japan
Toru Taniuchi, University of Tokyo, Faculty of Agriculture, Department of Fisheries, Japan
snp8.1: Robust scatterplot smoothing: correction
Author: Sean Becketti, STB Editor