Statistical Software Components

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TWOPM: Stata module to estimate two-part models: Federico Belotti and Partha Deb
TWOSTEP: Stata module to perform twostep multilevel analysis: Ulrich Kohler and Johannes Giesecke
TWOSTEPWEAKIV: Stata module to implement two-step weak-instrument-robust confidence sets for linear instrumental-variable (IV) models: Liyang Sun
TWOWAY__WHISTOGRAM_GEN: Stata module for generating histogram variables using aweights or iweights: Nicholas Cox
TWOWAY_ESTFIT: Stata module to enable graph twoway estfit: Michael Blasnik
TWOWAY_PAREA: Stata module to generate area graph with pattern fills (Windows only): Sergiy Radyakin
TWOWAYFEWEIGHTS: Stata module to estimate the weights and measure of robustness to treatment effect heterogeneity attached to two-way fixed effects regressions: Clément de Chaisemartin, Xavier D'Haultfoeuille and Antoine Deeb
TXT2QR: Stata module to produce QR codes containing plain text: Benjamin Daniels
TXTLABDEF: Stata module to define value labels from ASCII (text) file: Daniel Klein
TXTTOOL: Stata module providing utilities for text analysis: Unislawa Williams
UA: Stata module to provide prefix command for unicode utilities: Yujun Lian
UCGOF: Stata module to perform univariate categorical goodness-of-fit tests: Brent Hill
UCSPSPLIT: Stata module to extract paradata from a string variable produced by the universal client-side paradata script: Kai Willem Weyandt and Lars Kaczmirek
UDIFF: Stata module to estimate the generalized unidiff model for individual-level data: Ben Jann and Simon Seiler
UEVE: Stata module to compute unbiased errors-in-variables estimator and variants from grouped data: Aliaksandr Amialchuk
UFOREERRORS: RATS procedure to compute forecast errors for a univariate model: Tom Doan
UHLIGFUNCS: RATS procedure to compute criteria for Uhlig sign-restricted shocks: Tom Doan
UIRT: Stata module to fit unidimensional Item Response Theory models: Bartosz Kondratek
UIRT_SIM: Stata module to simulate data from unidimensional Item Response Theory models: Bartosz Kondratek
ULTIMATCH: Stata module to implement Nearest Neighbor, Radius, Coarsened Exact, Percentile Rank and Mahalanobis Distance Matching: Thorsten Doherr
UMBRELLA: Stata module to perform O'Brien's Umbrella test: William Dupont and Walton Plummer
UMETA: Stata module for u-statistic-based univariate and multivariate random-effects meta-analysis: Ben Dwamena
UNDERID: Stata module producing postestimation tests of under- and over-identification after linear IV estimation: Mark Schaffer and Frank Windmeijer
UNEMP: Stata module module to compute aggregate households employment deprivation (or unemployment) measures: Carlos Gradín
UNICODE2ASCII: Stata modules to translate between Unicode and ASCII: Svend Juul and Morten Frydenberg
UNIFORMPARMS: RATS procedure to compute required parameters for uniform distribution: Tom Doan
UNIQUE: Stata module to report number of unique values in variable(s): Tony Brady
UNIQUESTRATA: Stata module to abort the program if the specified variables don't collectively account for every observation: Ari Friedman
UNIQUEVALUES: RATS procedure to extract unique values from a series: Tom Doan
UNITAB: Stata program to display a univariate table for a binary outcome variable: Nicola Orsini and Matteo Bottai
UNITCHG: Stata module to manage conversion of units: Ulrich Kohler
UNITROOT: MATLAB module to calculate (Augmented) Dickey-Fuller and Phillips-Perron tests: Ludwig Kanzler
UNIVSTAT: Stata module to produce summary statistics in matrix form: Nicholas Cox
UPSETPLOT: Stata module to show Euler or Venn diagrams mapped to bar charts, upsetplot style: Tim Morris and Nicholas Cox
URCOVAR: Stata module to perform Elliott-Jansson test for unit roots with stationary covariates: Christopher Baum
USAGELOG: Stata module to log usage of Stata programs in an existing text file: Dan Blanchette
USD: Stata module to get US dollar exchange rates from the Federal Reserve: Nikos Askitas
USE10: Stata module to use and describe version 10 datafiles in Stata 9.2: Sergiy Radyakin
USE10SAVE9: Stata module to save matched Stata 10/11 files, from within Stata 9+, in Stata 9 format - either as new files in an automatically created directory or through replacing previous Stata 10/11 files: Lars Angquist
USE13: Stata module to import Stata 13 (*.dta) data into older versions of Stata: Sergiy Radyakin
USE13SAVE12: Stata module to load sets of matched Stata 13-files into Stata 10-12 and saving them in older formats readable for the Stata 10-12 user: Lars Angquist
USELAB: Stata module to list value labels and variables using them: Daniel Klein
USEOLD: Stata module to provide a convenient wrapper for unicode translate in Stata 14+: Daniel Bela
USEPACKAGE: Stata module to find and install a list of user-written packages needed to run a do-file: Eric Booth
USESAS: Stata module to use a SAS dataset: Dan Blanchette
USESOME: Stata module to use subset of Stata dataset: Daniel Klein
USESPSS: Stata module to import SPSS (*.sav) data (Windows only): Sergiy Radyakin
USEXMLEX: Stata module to import data stored in XML format: Sergiy Radyakin
USMAPS2: Stata module to provide US county map coordinates for tmap: Scott Merryman
USMAPS: Stata module to provide US state map coordinates for tmap: Scott Merryman