The command to tag the duplicates is: duplicates tag, gen(newvariable). This command checks the whole dataset with all variables for all observations for duplicates and stores the result as a number in the new variable with the name newvariable .
Downloadable! dups provides information about unique and duplicate observations in the dataset and, optionally, drops all duplicate observations. varlist is an optional variable list that determines which observations are duplicates (observations must match exactly on all variables in the list to be duplicates).
Then you should spread all H1,H2,H3 tags in your article. I feel there may possibly become a couple duplicates, but an exceedingly handy listing! che si aspettavano, ma se fosse stata una “Convertita” di aspetto più and data extraction were performed independently and in duplicate. The meta-analysis was performed with statistical software Stata/SE11.0.
I have discovered that some individuals have taken my survey twice or three times. I am able to identify these with the duplicates command and tag them having identified a group of variables which in combination should be unique for each unique respondent. I would like to go a Well, as -help duplicates- shows, a -varlist- is allowed with all of the fice commands. If you had the *OR* operator, this would be pointless. -duplicates tag- watches out for unique combinations of the variables in your -varlist- and then tags with the number of other observations sharing this unique combination. duplicates tag id if disease==0, generate (info) drop if info==1 but it's not working as I required. Best How To : It is no surprise that duplicates does not do what you are wanting, as it does not fit your problem.
Also this discussion – Matthew Jun 11 '15 at 14:52 The command to tag the duplicates is: duplicates tag, gen(newvariable).
help duplicates // see options for dealing with duplicates duplicates report state // report any 2 or more rows with the same value for state duplicates list state // list the duplicates duplicates tag state, gen(dup) // tag the duplicates, i.e. add a new variable called dup=1 for duplicates, = 0 otherwise
duplicates tag generates a variable that codes 0 for unique observations, 1 for observations with 2 copies, 2 for observations with 3 copies, and so on. The duplicates command (see [D] duplicates) gives various methods for identify-ing and dealing with duplicates in data.
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duplicates tag generates a variable that codes 0 for unique observations, 1 for observations with 2 copies, 2 for observations with 3 copies, and so on. Learn how to drop duplicate values in Stata. Nicholas J. Cox, 2000. "EXPANDBY: Stata module to duplicate observations by variable," Statistical Software Components S412801, Boston College Department of Economics.
Case 1: Identifying duplicates based on a subset of …
To have an output like that given from duplicates list, we use the duplicates tag command to create a new variable dup_id that assigns a 1 if the id is duplicated, and 0 if it appears once. Then we list those cases where dup_id is equal to 1. duplicates tag generates a variable representing the number of duplicates for each observation.
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I have discovered that some individuals have taken my survey twice or three times. I am able to identify these with the duplicates command and tag them having identified a group of variables which in combination should be unique for each unique respondent. I would like to go a step further and tag these such that I know which duplicate group each duplicate observation belongs to and whether it is the first, second or third Just replace duptag with the tag used by Stata and be aware that two observations sharing the same covariate pattern would each be counted twice (58 and 59 would both count under this rule).
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To have an output like that given from duplicates list, we use the duplicates tag command to create a new variable dup_id that assigns a 1 if the id is duplicated, and 0 if it appears once. Then we list those cases where dup_id is equal to 1.
关于duplicates drop, force的一点疑问,当出现冗余观测值时，我们是不是可以用duplicates drop var1 var2, force这个命令？那么留下的是默认排序之后遇到的第一个变量吗？ Eliminating Duplicate Cases in Stata1 * "h:\000\STATA_doc\DelDupCases.do" * This is a sample program that eliminates duplicate cases from a datset. * The sample data mimics data from CPS. * People can be interviewed for up to three years. * This researcher wants to save all of the cases that were interviewed Stata has two built-in variables called _n and _N. _n is Stata notation for the current observation number.
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Apr 12, 2018 The web query downloaded data has 433,066 observations. Identifying duplicates in Stata shows 73,704 tagged duplicate pairs which means Stata is a good tool for cleaning and manipulating data, regardless of the software you Variable labels are descriptions of variables, and value labels are used to It may be that the information contained in a given variable is d Nov 24, 2010 Hi listers, I am looking to find duplicate observations on a certain http://www.ats .ucla.edu/stat/stata/ Try -duplicates tag id time, gen(dups)- duplicates tag generates a variable representing the number of duplicates for each observation. This will be 0 for all unique observations. duplicates drop drops 2017년 4월 16일 아래명령어엔 list, tag, drop 등이 있다. 중복값을 화면에 보여주고자 할 땐 duplicates list, 중복값이 있는 줄(row)에 tagging을 하고자 할 땐 How to restore variables' labels after collapsing a dataset: use http://www.stata- press.com/data/r10/auto.dta. local allvar "price mpg trunk". ** storing labels.
I am a new STATA user with minimal experience. Currently I have been tasked with creating a program that will list out errors in our data set to facilitate cleaning. One key problem I am hung up on is finding a way to list out duplicates within multiple levels of another variable.
More generally, duplicates does not purport to be a general-purpose command for dropping observations you don't want. Your criteria appear to be Keep one observation for each id. If id has any observation with value of 1, that is to be kept. I am a new STATA user with minimal experience. Currently I have been tasked with creating a program that will list out errors in our data set to facilitate cleaning. One key problem I am hung up on is finding a way to list out duplicates within multiple levels of another variable.
Below, I used student2.dta (used in Statistics with STATA: Version 12) to illustrate one way of solving the problem. In this example, I want to (1) test whether the mean gpa between students taking different majors are the same, and (2) save the results I need into a tab-delimited text file. Starting with Stata 8, the duplicates command provides a way to report on, give examples of, list, browse, tag, or drop duplicate observations. This FAQ is likely only of interest to users of previous versions of Stata. Case 1: Identifying duplicates based on a subset of variables.