Stata drop repeated observations

Author: ygwk

August undefined, 2024

WebHey there, try this. bysort company: gen count_years= _N. Drop if count_years < 5. 4. random_stata_user • 2 yr. ago. egen is a typo for gen and count years is a typo for count_years. @Rogue_Penguin has it right: you don't need to create a variable holding the value of _N: you can just refer to it directly. 1. WebApr 29, 2024 · duplicates drop by itself is always safe, assuming that there aren't supposed to be any observations in the data set that are completely duplicates of each other. But …

Dropping duplicates but keeping recent observations - Statalist

WebJun 23, 2024 · How to delete #duplicates #repeated observations from #stata dataset 2,107 views Jun 23, 2024 15 Dislike Share Earnings management estimations stata 1.79K subscribers How to … WebIf you want to get rid of just the data and nothing else, you can use the command drop all. drop The drop command is used to remove variables or observations from the dataset in memory. If you want to drop variables, use drop varlist. If you want to drop observations, use drop with an if or an in qualiﬁer or both. 1 shows bias crossword

How to delete duplicate observations in Stata Stata …

WebI am using Stata and have panel data with two periods, t1 and t2. I also have a unique identifier that is constant across periods if the person has responded over both periods. … WebStata has two built-in variables called _n and _N. _n is Stata notation for the current observation number. _n is 1 in the first observation, 2 in the second, 3 in the third, and so on. _N is Stata notation for the total number of observations. Let’s see how _n and _N work. WebShare. Watch on. In Stata there are several ways to drop observations from a dataset. The most basic way is to use the ‘drop’ command. This command allows you to select the … shows better than better call saul

Deleting variables and observations - Stata

WebNow, we can use the duplicates drop command to drop the duplicate observations. The command drops all observations except the first occurrence of each group with duplicate … WebNext we will drop any observation for which medage is greater than 32.. drop if medage>32 (3 observations deleted) Let’s drop the ﬁrst observation in each region:. by region: drop if _n==1 (4 observations deleted) Now we drop all but the last observation in each region:. by region: drop if _n !=_N (39 observations deleted) shows berlin 2021Starting 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 You wish to create a new variable named … See more You wish to create a new variable named dup and to base the determination on the variables name, age, and sex. Note the capitalization of _N and _n. (Stata … See more Picking up where case 1 left off, if you want to drop all duplicate observations but keep the first occurrence, type To drop all duplicate observations, including the … See more Obviously, one solution would be to treat this as case 1, and simply type the names of all the variables in your dataset. The following is a variation on that idea that … See more Picking up where case 3 left off, this is no different from case 2. If you want to drop all duplicate observations but keep the first occurrence, type If you want to … See more shows bh

"WebIn our example, we have one group of observations with duplicates consisting of observation number 1, 7 and 8. That is what we see below. dups group by: id female race … " - Stata drop repeated observations

Dropping duplicates but keeping recent observations - Statalist

How to delete duplicate observations in Stata Stata …

Stata drop repeated observations

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