Repeating commands by looping over numbers Repeating commands by looping over variables Tips on long-term goals in data management Ĭomputing values within subgroups: More examples Ĭomputing values within subgroups: Running sums. Ĭomputing values within subgroups: Subscripting observationsĬomputing values within subgroups: Computations across observations. Ĭomputing values separately by subgroups. Merging: Additional options when merging datasets Ĭonverting numeric variables to string variables. Ĭonverting string variables to numeric variables. Ĭhanging the order of variables in a dataset Labeling variables and values in different languagesĪdding comments to your dataset using notesįormatting the display of variables. Ĭhecking continuous by continuous variables. Ĭhecking categorical by continuous variables.

Ĭhecking categorical by categorical variables. Saving comma-separated and tab-separated files. Įntering data directly into the Stata Data Editor Reading fixed-column files with multiple lines of raw data per observation. Reading comma-separated and tab-separated files. Working with you on your questions and problems taught me more than you could ever know. Finally, I want to thank all the terrific clients who asked me statistical consulting questions at UCLA. I am also grateful to Frauke Kreuter for her very kind assistance in translating labels into German in chapter 4.

I also want to thank Lynn Soban for her helpful review and much appreciated encouragement. Xiao Chen, Phil Ender, Rose Medeiros, Brigid Brettesborn, and especially Christine Wells provided much needed feedback and thoughtful suggestions. I also want to thank the members of the UCLA ATS Statistical Consulting Team, who generously shared their thoughts on this book. I also want to thank Deirdre Patterson for her excellent and meticulous editing, Annette Fett for creating such a clever and fun cover design, and Lisa Gilmore of the Stata Press production team for all the terrific things she does. I am especially grateful to Vince Wiggins, who watered the seeds of this book, providing encouragement and, perhaps most important of all, faith in this endeavor. Much of what you read in this book has been shaped by his keen advice and astute suggestions. I want to start by thanking the good, kind people at StataCorp and Stata Press for their help, encouragement, and support in writing this book. 2.4 Reading comma-separated and tab-separated filesĢ.7 Reading fixed-column files with multiple lines of raw data per observationĢ.10 Entering data directly into the Stata Data EditorĢ.11 Saving comma-separated and tab-separated filesģ.4 Checking categorical by categorical variablesģ.5 Checking categorical by continuous variablesģ.6 Checking continuous by continuous variablesĤ.6 Labeling variables and values in different languagesĤ.7 Adding comments to your dataset using notesĤ.9 Changing the order of variables in a datasetĥ.12 More examples using the egen commandĥ.13 Converting string variables to numeric variablesĥ.14 Converting numeric variables to string variablesĦ.8 Merging: Additional options when merging datasetsħ Processing observations across subgroupsħ.2 Obtaining separate results for subgroupsħ.3 Computing values separately by subgroupsħ.4 Computing values within subgroups: Subscripting observationsħ.5 Computing values within subgroups: Computations across observationsħ.6 Computing values within subgroups: Running sumsħ.7 Computing values within subgroups: More examplesĨ.3 Introduction to reshaping long to wideĨ.5 Introduction to reshaping wide to longĩ.2 Tips on long-term goals in data managementĩ.3 Executing do-files and making log filesĩ.8 Repeating commands by looping over variablesĩ.9 Repeating commands by looping over numbersĩ.10 Repeating commands by looping over anythingĩ.11 Accessing results saved from Stata commandsĩ.12 Saving results of estimation commands as dataġ0.2 Finding and installing additional programsĪ.3 Working across groups of observations with byĪ.B Subsetting observations with if and inĪ.9 Subsetting observations and variables with keep and dropĪcknowledgements As I think about the process of creating this book, my heart fills with gratitude for all the help that I received in writing it.

Do file stata