p t2docx module to report Mean Comparison for variables between two groups with formatted table output in DOCX file p t2way5 module to perform Tukey's Two-Way Analysis by Medians p tab2mat module to produce a one-way table as a matrix p tab2way module to handle two-way tables with percentages p tab3way module to handle three-way tables with percentages p tab_chi modules for tabulation of multiple variables in Stata 8.2 or better p taba module for tabulation of frequencies p tabcond module to tabulate frequencies satisfying specified conditions p tabcount module to tabulate frequencies, with zeros explicit p tabcusum module to graph observed minus expected CUSUM vertically aligned with tabular CUSUM p tabex module to efficiently export tabulations to Excel p tabexport module to export tables of summary statistics to text files p tabform module to export tables of means, standard deviations to text file p tabhbar module to show table of frequencies as horizontal bar chart p tabhplot module to show table of frequencies as horizontal plot p tablab module to autocrosstabulate a variable p table1 module to create "table 1" of baseline characteristics for a manuscript p table1_mc module to create "table 1" of baseline characteristics for a manuscript p tablecol module to add column percentages to table command p tablemat module to produce and export table of results in a matricial format p tablepc module for percent calculation prior to table p tableplot module giving graphical display in two-way table format p tabletutorial module to provide tutorial on automated table generation and reporting with Stata p tabm module to extend tabulate and produce XML format p tabmerge module to tabulate report on merge p tabmult module to produce multiple two-way tabulations p tabone module for exporting single or multiple one-way tabulations into various formats p tabout module to export publication quality cross-tabulations p tabplot module to show table of frequencies as table of bars p tabsheet module to rapidly output cross-tabular statistics to a tab-delimited file p tabstat2excel module to export summary statistics generated from a tabstat command to an Excel spreadsheet p tabstatmat module to save matrices saved by tabstat to single named matrix p tabxml module to save results in XML format for use in Microsoft Excel and OpenOffice Calc p tacts module to provide a clinical trial simulator p tail module to print the tail observations (last observations in data set) p tarow module to tabulate each row against all others p tcod module to perform Gloudemans' COD tolerance tests p tddens module to estimate and graph bivariate density with heat map p tdpd module to analyze third-degree price discrimination p ted module to test Stability of Regression Discontinuity Models p tesensitivity module for assessing sensitivity to the unconfoundedness assumption p testcase module to provide a code-testing framework for Mata p testex module for a statistical test of the exclusion restriction of an instrumental variable (IV) p testijfe module to perform test for instrument validity in the judge fixed effects design p testjfe module to perform test for instrument validity in the Judge fixed effects design p testmnt module to test sshfs p testout module to execute diagnostic testing of outliers p tex2col module to Split Text into Columns p tex3pt module to produce LaTeX documents from estout with threeparttable p tex_equal module to compare text files p texdoc module to create a LaTeX document including Stata output p texify module to compile a LaTeX document p texmerge module to merge many .tex files into one and then compile the final file to .pdf p texresults module to create external file of LaTeX macros with results p texresults2 module to create external file of LaTex macros with results p texsave module to save a dataset in LaTeX format p textbarplot module to produce horizontal text and bar plot p texteditors module -- some notes on text editors for Stata users p textfind module to identify, analyze, and convert text entries into categorical data p textgph module to add strings of text to a graph p textpad module to call TextPad to edit a file p tfdiff module to compute pre- and post-treatment estimation of the Average Treatment Effect (ATE) with fixed binary treatment p tfinsert module to insert text into an open text file p tfr2 module to compute Age-specific fertility rates (ASFRs), total fertility rates (TFRs), fertility trends and rate ratios from birth histories p tfv module to produce transformations of variables p tgmixed module to perform Theil-Goldberger mixed estimation of regression equation p tgraph module to plot graph with transformed axes p theildeco module to produce refined Theil index decomposition by group and quantile p theilr2 module to compute Theil R2 Multicollinearity Effect p thsearch module to evaluate threshold search model for non-linear models based on information criterion p tictoc module to provide simplified timer commands p tidy module to ease reshaping of data p tihtest module to test for time invariant unobserved heterogeneity in GLMs for panel data p timeit module to provide single line version of timer on/off p timestamp module to obtain a UNIX timestamp and the current time of a user-specified timezone p titebeta module to conduct toxicity monitoring for phase 2 (and 3) trials p title module to create a title for logfiles p tiva2023 module to manipulate the OECD TiVA inter-country input-output tables database p tkdensity module for univariate kernel density estimation with calculation on transformed scale p tknz module to tokenize string into named macros p tmap module for simple thematic mapping p tmpdir module to indicate the directory Stata is using for a temporary directory p tmpinv module to providing a non-iterated Transaction Matrix (TM)-specific implementation of the LPLS estimator p tmpinvi module providing an iterated (multistep) Transaction Matrix (TM)-specific implementation of the LPLS estimator p tmpm module to implement Trauma Mortality Prediction Model using AIS, ICD-9 or ICD-10 codes p tmpm2 module to implement Trauma Mortality Prediction Model using AIS, ICD-9 or ICD-10 codes p tobithetm module to estimate Tobit Multiplicative Heteroscedasticity Regression p tobitiv module to perform instrumental variables tobit p todate module to generate Stata date variables from run-together date variables p todummy module to create dummy variables p tolerance module to calculate tolerance intervals (normal distribution) p tolong module to provide a faster reshape long p tolower module to rename variables with lower case names p tomata module to make vectors in Mata of variables in Stata p tomode module to change values of a variable to mode(s) p torats module to facilitate transfer of data to RATS p torumm module to produce data in RUMM format p tosql module to transfer data to SQL database p touch module to create a blank data file p tpm module to estimate two-part cross-sectional models p tpoisson module to estimate truncated Poisson regression p tpred module to generate predictions from Tobit model p tpvar module to generate turning-point variable for graphics labelling p tr module providing prefix command to trace program execution p traces module to display traces of items p trackobs module to keep a record of the number of observations in the current dataset. p trans_unicode module to convert files to and from Unicode p transint help files for transformations p translog module to create new variables for a translog function p transplot module producing plots for trying out transformations p traveltime module to generate travel time and travel distance information p treatoprobit module to estimate a treatment effects model for a binary endogenous treatment on an ordered outcome p treatoprobitsim module to estimate a treatment effects model for a binary endogenous outcome and ordered outcome using a latent factor structure p treatrew module to estimate Average Treatment Effects by reweighting on propensity score p tree module to model decision trees p treecluster module for plotting clustered trees p treemap module for treemaps p treeplot module to graph a tree in Stata p trellis module to create a trellis graph p trimlabs module to trim variable labels p trimmean module for trimmed means as descriptive or inferential statistics p trimplot module for plots of trimmed means p trinary module containing extensions to generate to implement three-way logic p triplot module to generate triangular plots p triprobit module to estimate trivariate probit model using the GHK simulator p trnbin0 module to estimate zero-truncated negative binomial regression p trpois0 module to estimate zero-truncated Poisson regression models p truecrypt module to mount or dismount TrueCrypt volumes p truernd module to generate true random numbers p try module to call a Stata command repeatedly until it succeeds p tryem module to run all possible subset regressions p tscb module to implement the two-stage cluster bootstrap estimator p tscollap module to compact timeseries into dataset of means, sums, end-of-period values p tsegen module to call an egen function using a time-series varlist p tsgraph module to produce time series line graph p tslist module to list time series data p tslstarmod module to estimate a Logistic Smooth Transition Autoregressive Regression (LSTAR) Model for Time Series Data p tsmktim module to generate time-series calendar variable p tsplot module to produce a time series plot p tsspell module for identification of spells or runs in time series p tstf module to compute intervention time-series models p ttab module to produce formatted tables with t-test for two-groups mean-comparison p ttable module to produce Mean Comparison for many variables between two groups with formatted table output p ttable2 module to produce Mean Comparison for many variables between two groups with formatted table output p ttable3 module to perform Mean or Median Comparison p tteir module to prepare time-to-event data for incidence rates p ttestex module to perform t-tests and export the results to excel for multiple dependent and by multiple binary variables/across sub-samples p ttestplus module to automate t-tests p ttesttable module to compute differences in means by groups including the T-test p tuples module for selecting all possible tuples from a list p turnbull module to estimate the Turnbull empirical distribution estimator of willingness to pay p tvdiff module to compute pre- and post-treatment estimation of the Average Treatment Effect (ATE) with binary time-varying treatment p tvgc module to perform Time-Varying Granger Causality tests p tw3xls module to export publication-ready three-way and four-way tables into xls or xlsx p twby module to create a cross-tabulation of graphs p twexp module to estimate exponential-regression models with two-way fixed effects p twfe module to perform regressions with two-way fixed effects or match effects for large datasets p twfem module to efficiently estimate a two-way fixed effects model based on Somaini and Wolak (2015) p twgravity module to estimate exponential-regression models with two-way fixed effects from a cross-section of data on dyadic interactions p twitter2stata module to import data from Twitter p twofold module to perform multiple imputation using the two-fold fully conditional specification algorithm to impute missing values in longitudinal data p twopm module to estimate two-part models p twostep module to perform twostep multilevel analysis p twostepweakiv module to implement two-step weak-instrument-robust confidence sets for linear instrumental-variable (IV) models p twoway_estfit module to enable graph twoway estfit p twoway_parea module to generate area graph with pattern fills (Windows only) p twowayfeweights module to estimate the weights and measure of robustness to treatment effect heterogeneity attached to two-way fixed effects regressions p txt2qr module to produce QR codes containing plain text p txtlabdef module to define value labels from ASCII (text) file p txttool module providing utilities for text analysis