Stata collapse if Any thoughts? Thank you. Otherwise, it will be a fraction between 0 and 1. I take the issue to be how, when asked to treat _cumulative_ sums with -sum()-, Stata regards missing values. From: Dawood Ashraf <[email protected]> Re: st: Collapse - How does it collapse. The collapsed data shows that ‘wage’ was greater than 30 for 35 Dec 13, 2020 · Thanks Clyde, I will check it out. pdf here. do files. In Sep 12, 2019 · Stata command collapse can create a new data set that contains the summary statistics of the original variables. do file that I need to translate into R because I don't have a Stata license; my Stata is rusty, so can someone confirm that the code is doing what I think it Mar 27, 2015 · I want to collapse my data so for each newid I have the sum of restaurant expenditures for the household during the week. Code: set seed 666 . answered Dec 3, 2017 at Dec 2, 2021 · Testing with an invented dataset I discovered (using Stata 17) that including a string variable in the list of variables to be collapsed gives the following results. "income, gender == other"). Login or Register by clicking 'Login or Register' at the top-right of this <> I am puzzled by what you mean when you say it just ends. What I am trying to do is Apr 6, 2022 · Hello everyone, I am having a similar issue with my Stata 17 and the collapse function. I am trying to apply this to datasets with over several hundred thousand . From: Nick Cox <[email protected]> Prev by Date: Re: st: dynamic panel Feb 19, 2021 · I have a dataset with a lot of repeating variables. I used the following two lines of code: egen count_obsv = tag(loc_ID year) This adds a counter to my Aug 17, 2022 · Working in Stata, suppose I have a How to collapse numbers with same identifier but different date, but preserve the date of first observation for each identifier. This is much liking creating statistics for groups of cases, but by collapsing Aug 22, 2018 · My understanding is that stata drops all cells with zero observations when I use collapse (correct me if I'm wrong!) How can I force stata to assign zeros to those cells with no To avoid anomalies if there are missing values, something like this is more careful: sysuse auto, clear gen present = !missing(mpg, weight) collapse (count) present (mean) mpg weight if 2 days ago · For instance, if you want to calculate the mean life expectancy and GNP per capita with their standard deviation by region, you can use the following command. N. Jan 28, 2023 · This will give you the same results for immi_sh and the `control' variables. One approach that comes to mind is using the egen command rather than collapse to generate the variables you need within the existing dataset. The first detail to clarify is whether this issue arises under the latest version of Stata as the code for group() has been massively rewritten in the lifetime of Stata Jun 11, 2016 · I couldn't find a Stata command on the following issue, so I solved it manually: According to the official manual, Stata doesn't do weights with averages in the collapse thanks nick, sorry about attachment, glad I typed an example! Kevin On Tue, Dec 11, 2012 at 11:46 AM, Nick Cox <[email protected]> wrote: > On principle I am ignoring your attachment. Stata Technical Bulletin 44: 2-3. [][][Thread Prev][Thread Next][][Thread Index] There are three ways to put frequencies in a new variable: tabulate oneway or tabulate twoway will save counts as a matrix. If Dec 6, 2021 · I have a dataset containing postal codes, district numbers and some other variables such as income, age, education levels etc from about 10,000 observations. dta" I can't figure out Aug 28, 2015 · Do not use Stata's weeks and in particular do not use the wofd() function (not a command), as they can't help you. . If you specify a merge matched on a variable with missing values, you expect the missing values to be matched. N . I need to Is there an extension to -collapse- that counts the number of distinct observations for a variable? For example, say I have a dataset of individuals, each of whom is assigned to a group. However, it is Feb 6, 2021 · ***Collapse***clearsysuse nlsw88summ grade agecollapse (mean)grade agebrowsecollapse (mean) age grade wage, by(occupation)browsehelp collapsecollapse (mean) I might be overlooking something here, but the question is/was about _variable_ labels, not _value_ labels. The precision will 3 days ago · In this case, Stata will collapse the data into the categories of ‘race’, and add an observation count for the ‘wage’ variable only when ‘wage’ is greater than 30. > While this is I want to collapse the data set to the geocode level, so the simple command would be: collapse varlist,by(geocode) However some geocodes barely have any respondents and any collapsed Oct 17, 2022 · Dear Statalist: My goal is to aggregate individual-level data (e. The data set is a network panel, in which some variables refer to From [email protected] To [email protected] Subject Re: st: collapse if at least X or more obs. Commands in the video: . For example, I need only to have dates. All Time Today Last Week Last Month. Follow edited Dec 4, 2017 at 0:57. Login or Below my signature is the key part of the posting referred to. I came across this method somewhere Suppose you have a logit model where you are trying to estimate the number of children a couple will have. Remarks and examples stata. egen origin_condition= group(foreign goodcond), label . g. Oct 6, 2014 · sort ticketid time preserve ** some collapse command save "temp_terminal_sales. Nick [email You're correct. I don't want to use the variable labels either (e. 719 1064 11sep2012 1. Say I have data (the 1's correspond to the same person, so do the 2's and the 3's) that, when summarized, looks like this:. How to keep all possible combinations in st: Collapse - How does it collapse. But it will also spit out results for all but one of the index levels, and then another series of output Sep 25, 2022 · Home; Forums; Forums for Discussing Stata; General; You are not logged in. dta, Nikhi wrote: > Is there a way to get all (_all) except for one of the variables? To my mind come two easy solutions: - to use "if" and loop through the levels of your categorical variable: ***** May 16, 2017 · Hi, i have a panel data with 3 years. Share. -collapse- cannot calculate a statistic like mean On principle I am ignoring your attachment. help collapse [] collapse clist [] where clist is either [ (stat)] varlist [ [ (stat)] ] [ (stat)] Jun 25, 2019 · Yes, the collapse command with the sum stat will return a zero for a given by () combination if all of the called values are missing. ; Use the Looking at your original example, it seems destined to confuse. You can browse but not post. Describe your dataset. The reason why I changing month is that when I take into account fiscal month, the Oct 11, 2023 · Collapsing . Any advice or guidance would be most 1 day ago · Sometimes you have data files that need to be collapsed to be useful to you. 719 1064 10sep2012 1. Ask Question Asked 11 months ago. ) I wonder how I can accomodate the values I obtain from using the collapse command to the Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist. I have a panel data containing daily observation for ten years (hence 3650+ Dear Stata friends, I am trying to collapse some variables using the MODE as my descriptive statistic, but I see that -collapse- doesn't allow this. I have this problem: Find the university with the largest OP contacted me off-list to say: On Mon, Nov 26, 2012 at 7:16 PM, Tomáš Houška <[email protected]> wrote: > Dear Mr. Show. 1 day ago · Sometimes you have data files that need to be collapsed to be useful to you. collapse 将变量数据转换为均值、和、中位数等等。clist 必须为数字变量。 语法与选项 collapse clist [if] [in] [weight] [, options] where clist is Dear Statalist Nick Cox has a trick to keep variable labels after -collapse- Reference: In practice, you only need to remember to "squeeze" -collapse between "include copylabels" and Jul 21, 2021 · I wish to collapse my dataset and (A) obtain medians by group, and (B) obtain the 95% confidence intervals for those medians. A few questions: Does Stata print the line "end of do file" line after your last line? If there is no message and you really are Feb 19, 2019 · As country and contab are string variables, you cannot do that. The option "cw" on your collapse command instructs Stata to ignore any observation for which any of the 150 variables being collapsed is missing. Another Jun 23, 2015 · Just came across a . ) based on multiple conditions, and send output to a new variable schoolage. do do data May 11, 2018 · What I want know, is to calculate a fiscal month by the using the idea in the code above. Time. You can tweak that approach by bysort youthid group (duration) : gen allmissing = missing(duration[1 Mar 21, 2016 · In the above table, person 1 made two trips and three item purchases (because two dates are shown), person 2 made three trips. The article From "Nick Cox" < [email protected] > To < [email protected] > Subject RE: st: Collapse with sum function and missing values: Date Wed, 10 Feb 2010 12:41:52 -0000 Apr 6, 2017 · I'm collapsing my data using weight, but I only want the weight to apply to my median and sum, not my count. sysuse nlsw88. If you have one Am Mittwoch, den 20. mdesc is from SSC. I would suggest that you install dataex an provide a sample of your data-set Dear All, Why we can't use original data file and keep 1st record and append with collapsed data? Then we can drop first observation from the dataset. Collapse allows you to convert your current data set to a much smaller data set of means, medians, maximums, minimums, count or percentiles (your choice of Jan 18, 2025 · What is the collapse command? The collapse command in Stata is used to aggregate a dataset by collapsing it based on some summary statistics of a variable like mean, sum, median, percentile, standard error, etc. contract so that "yes" (or "1") responses are in the numerator and total observations Oct 25, 2021 · It works well, except the variable names "income1, income2, income3" appear in the legend. 2010, 02:35 -0400 schrieb Eric Uslaner: > Greetings, > > I have a survey data set with respondents geocoded. com collapse takes the dataset in memory and creates a new dataset containing summary statistics of the Feb 25, 2021 · You can use the -group ()- function of egen to combine variables. I am trying to collapse rows that have identical variables in column "fruit", while maintaining unique columns for each "year" of Sascha O. En este MÓDULO exploramos una g Jul 29, 2015 · Home; Forums; Forums for Discussing Stata; General; You are not logged in. The key problem is to identify the last Alberto then provides code where he uses -collapse- with -mi xeq- to obtain such a dataset, but receives an error: > I am currently doing the following, using an individual level data file: > > mi Hola ! En esta ocasión les comparto la 4ta PARTE del 5to MÓDULO de una capacitación a agentes estatales sobre el uso de STATA. . e. 2 (apologies in advance as I am using stata on a university server and cannot use dataex on the university version) I want to collapse the data, so each Mar 12, 2022 · I am trying to collapse this data of all treatment lines to include only the first treatments for the CLL RT time points. Ask Question Asked 3 years, 3 months ago. B. Each patient is one id listing first treatment drugs, time Feb 20, 2024 · Hi everyone, Hello, I would like to know if it is possible to retrieve the changes made during a collapse of the initial database. collapse (sum) cost if Jul 25, 2022 · Collapse/Contract Collapse. Nicholson, > > thank you for your help on Stata collapse. Modified 11 months ago. Mauricio Caceres You could create a "master" . dta" restore append using "temp_terminal_sales. [ Date Prev ][ Date Next ][ Thread Prev ][ Thread Next ][ Date Index ][ Thread Index ] From Feb 28, 2024 · Stata - egen, bysort, collapse. The closest I Oct 29, 2015 · The following option is available with collapse but is not shown in the dialog box: fast specifies that collapse not restore the original dataset should the user press Break. If Welcome to my classroom!This video is part of my Stata series. Read the FAQ carefully. 2. But The FAQ concerned dates to 2002 (revised 2003): there's a simple question whether -label save- existed then. I am aware that if Product were a numeric variable we could use the collapse command. For example, Jul 30, 2019 · Hi Yue, I can only assume that there is some issue with the formatting of the variable "city". Aug 2, 2021 · However, I wonder if this is a poor use of levelsof and if there is a faster, more elegant solution. I can achieve (A) by using collapse (p50) median From "Chih-Mao Hsieh" < [email protected] > To < [email protected] > Subject RE: st: Short program to "collapse (# unique elements)": Use of nested loops and a "weights not allowed" Jun 13, 2022 · I am interested in ateco C, GHI and F and I want to collapse data (by Date) for all the other ateco in one new ateco, i. For example, you might have student data but you really want classroom data, or you might have May 18, 2023 · Stata will also allow a collapse to condition on combinations of variables. , age, sallary, etc. per group are non-missing: Date Tue, 24 Aug 2004 21:03:46 +0200 (CEST) Dec 20, 2022 · Actually, you probably aren't getting that result. All Discussions only Photos only Videos only Links only Polls Jul 2, 2017 · Hi, I'm using STATA 14. This is much liking creating statistics for groups of cases, but by collapsing Apr 9, 2015 · . It is clear that you do not really want to do what your Oct 24, 2018 · . As far as I see, -label save- just saves and "restores" the latter. How to collapse string variables such that they appear concatenated? 2. svmat can be used to create variables from the matrix. collapse (mean) mean_GDP=GDP (count) count_GDP=GDP , by (country decade) Or you could use -egen- 4 days ago · Get to know Stata’s collapse command–it’s your new friend. Jun 14, 2013 · Your problem does not even call for sum() with if, so it is best to start at the beginning. Take a look at the following code. I am interested in the average number of Jun 23, 2024 · I want to collapse the data in Stata such that the data appears as : Table 2. You can call what you want collapsing if This is really a feature, although I may have to work hard to convince you of that. Note that collapse works by replacing your data with the Running collapse (percent) foo (mean) baz, by(bar) would create a dataset like: Jul 7, 2018 · Dear Statalist, Excuse me for this rather rudimentary question but it has puzzled me for a few days. Reconstructing your problem, which is not well explained, You have observations Nov 16, 2022 · collapse replaces the dataset in memory with a new dataset of group statistics. You do need a year value to collapse Mar 10, 2020 · Is there a way to use the collapse command to generate proportion? I have data from NYC sub-boroughs and it gives certain variables in percentage. I have the 15 Feb 2022 update installed. However, I Jul 29, 2020 · Hi, I am working with panel data where I have 9 different regions and in each region there are a different number of schools. Jun 3, 2024 · I have a dataset in Stata and want to count by group (loc_ID) and year. do file that calls several subordinate . ) That said, the macro-based method has some Oct 21, 2016 · Well, I don't know how you get the result you say you have, but I can tell you why you don't have the one desired: Using collapse is not appropriate here. collapse observation_date [year, quarter] weights not allowed r(101); and . You might know for certain that there are no missings in your ID field so this Sep 16, 2020 · Perhaps I could have collapsed each in turn and then merged the alldel that was created in the collapse back into the full dataset until all 7 were created and then did a final Thank you Nick! On Mon, Apr 2, 2012 at 2:38 PM, Nick Cox <[email protected]> wrote: > You don't need -collapse-. (I am away from my old manuals. Viewed 470 times 0 . Collapsing your data means to combine several cases into single lines. This will create a new dataset with 7 variables, with group variable Stata: Data Analysis and Statistical Software . The code looks like this: Before -collapse-, copy the variable Perhaps more information about the discrpency you noticed would be helpful? -egen- and -collapse- both use -generate-'s sum function. If you want to instead execute what's called a window function in SQL, which does not reduce the Aug 14, 2023 · After messing around with a bunch of different options, the best (read: least time-consuming) thing I have found to do is to use the collapse command to produce data that I can Nov 16, 2022 · collapse replaces the dataset in memory with a new dataset of group statistics. I tried using if commands, but I would prefer stata命令介绍collapse ：分组统计数据 含义描述. Thus, for Nov 11, 2016 · I know I could do this in two separate lines, but that seems inefficient, especially because I have many lines of similar code. Page of 2. I misread the question. The Apr 27, 2018 · Hello, I would like to know how to use collapse command if I need to take only certian dates within a large time series. A series where I help you learn how to use Stata. "Say exactly what you typed and exactly what Stata typed (or did) in response. My guess is that usually when a -collapse- or -contract- asks for combinations that May 29, 2018 · Collapse. Depending on the collapse, it can be up Sep 18, 2024 · However, when I use collapse in the following manner: collapse (sum) number_employees, by ( Firm_1 Firm_2 year) the command drops the variables blah_1 and Oct 5, 2014 · You should: 1. Posts; Latest Activity; Search. All obs are numerical, no strings (type: Oct 14, 2015 · Weighted Average in Stata's collapse command. The time period is 10 months. This is explained in the FAQ. Stack Exchange network consists of 183 Q&A communities Jan 6, 2019 · I am trying to count values of many string variables (hh_1_age hh_2_age hh_3_age etc. -uselabel- may Jason I am not sure you want the -collapse- command at all. The command: by Personid Referraldate, sort: keep if _n == 1 will -keep- the first observation of each Personid, and since Nov 17, 2022 · Is there a way to collapse every single var in a dataset? (Some vars have missing data, but I think stata should still be able to sum?). Or > > drop if mi Jan 8, 2025 · pkcollapse—Generatepharmacokineticmeasurementdataset Description Quickstart Menu Syntax Options Remarksandexamples Methodsandformulas Alsosee Description Should work once you take the comma out of -group()-. Stata 17+, MP version, introduced significant speed improvements to the native collapse command, specially with many cores. exactly!" 3. You may wish to take a look at this article. 719 Hi, I've encountered some unexpected behaviour whilst using -collapse- on different subsets of data. 0. fast is "Riano, Alejandro" wrote: > I'm collapsing the standard deviation for a set of variables (monthly > frequency): > > collapse (sd) er rer, by(country_name year Oct 8, 2014 · Thanks for this. W, so that I end up with a panel dataset where Date Apr 30, 2024 · Hi all First time posting (sorry in advance for any mistakes in how to post, will edit of course!) I am having an issue using the collapse command for a large dataset of ~700,000 Mar 30, 2017 · I want to keep my variable labels after collapsing in stata. * Example generated by -dataex-. You can use ds to create a list of variable May 12, 2023 · Stata collapse translated to R. Thanks William, looking at the list output am I right in thinking that age_p50 is listing the 50th percentile age for different permutations of Oct 6, 2021 · pandas equivalent of Stata collapse lastnm. If you want to Jul 15, 2024 · In response to the comment: You can generate the formatted date for only observations where VarA is > 0 (and not missing). There: . org. collapse observation_date [year] weights not allowed r(101); Why if stata knows the date, can it not Jul 2, 2020 · u/DarudeSandstorrn, note, however, that count in collapse will only count nonmissing observations. Weighted Average in Stata's collapse command. As was mentioned very recently, you should not send attachments to Statalist. It Mar 29, 2018 · Welcome to Statalist. No, you just have to name the "target" variables differently, e. Then each of the subordinate files would only contain the code for each of your routines: Master. In this way, you can get the breakdown that you want. > However, they are Mar 5, 2021 · The commands (not functions) mdesc and missings don't include zeros because to Stata zero is not considered missing, as Felix Bittmann explains clearly. Use list to list Feb 28, 2024 · Like, a Stata Collapse, a pandas Groupby reduces the size of the data set. J. Nov 19, 2018 · I'm trying to collapse only a subset of my data using if, but it seems to be dropping / collapsing much more than I expect. Ask Question Asked 1 year, 5 months ago. The only difference I see is that -collapse- <> It's not clear why you are missing year information -- you've got scores from those years, so you could replace year if the score value is not missing. Jose ----- Original Message ----- From: "Austin Nichols" <[email protected]> To: [email protected] Sent: Friday, March 4, 2011 4:07:25 PM GMT -06:00 Combining indivudal-level data with group-level data. Login or Register by clicking 'Login or Register' at the top-right of this Philipp Rehm <[email protected]>: This seems to be the desirable outcome. For example, we could perform the same collapse as the previous command, however instead of Jan 1, 2017 · Welcome to Statalist. This is a special case using the SSC -strgroup() Jul 10, 2015 · You should: 1. I found Nick Cox's solution not working for me. 749 1064 08sep2012 1. Viewed 65 times 0 . Jun 25, 2019 · Hi, I'm using COLLAPSE to compute sums of variables by persons (who have unique ids) and by year. Sorry. Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist. Obs On Wed, Apr 13 2011, Amadou DIALLO wrote: > Hi, > I am translating spss commands to stata and have trouble with different outputs. Cox > wrote: >> Is there an extension to -collapse- that counts the number of distinct observations for a variable? Thanks Austin, that worked. You can use collapse when you want to create summary statistics of your data, or some of your variables. Each Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist. However, it is Jul 31, 2019 · Edit: for those unfamiliar with Stata, this will "collapse" the . In this video, we look at how to use the col Speaking Stata: Distinct observations (help distinct if installed) . I am trying to replicate Stata's Aug 21, 2024 · The mean of a 0/1 variable will be zero if all observations in the group are 0 and one if all observations are 1. > Results are different after "aggregate" for ceb Mar 30, 2015 · And even though things can be done in Stata it might be good to see how things can be done in Mata. Filter. For example, you might have student data but you really want classroom data, or you might have Jun 13, 2022 · I am interested in ateco C, GHI and F and I want to collapse data (by Date) for all the other ateco in one new ateco, i. Let's say there are 3 couples, 1, 2 and 3. Modified 3 years, 3 months ago. Stack Exchange Network. An example to demonstrate the problem. 10. Nick [email protected] Gary Longton > Daphna Bassok wrote: > > > I have several duplicate observations in my data set. If pm10 is a double in the data before you -collapse- it, then the mean will also be a double after -collapse-. As reported, it has its own idea of suitable variable labels for the new variables. Stata's weeks will not map on to your weeks. Improve this answer. Viewed 141 times Part of R Language Collective 0 I am trying to Oct 22, 2022 · After the command we have (mean), which tells Stata that we want to save the means, and we do it for the variable wdi_empagr (the percentage of the population employed Sep 4, 2024 · Sergio Correia's -fcollapse- command in the -ftools- SSC package apparently achieves a similar degree of improvement, and keeps the -collapse- syntax. You gave examples of -type- as "a" "b" "c" and then said that they were numeric characters, which to me still implies a string I've got to say that while Neil has a good logical case, I also regard this as a reasonable default behaviour. But you could look at -lastnm-. I want to collapse the data set to the geocode level, so Aug 12, 2016 · Is there a way to use collapse or contract with an if option to do this (or any other way), e. Use list to list From [email protected] To [email protected] Subject Re: st: collapse if at least X or more obs. per group are non-missing: Date Tue, 24 Aug 2004 21:03:46 +0200 (CEST) Dec 9, 2022 · Note. Stata tells you this by pointing out the type mismatch. We also show how to write out individual-level and group-level data from a combined dataset using the c Sep 11, 2024 · I want to use Stata's collapse like summarize. But the intermediate step of creating an extra variable, while it does no harm, is unnecessary. If you want to add data to an existing dataframe you can Jul 25, 2022 · Collapse/Contract Collapse. Modified 1 year, 4 months ago. To install: ssc install dataex clear input str27 revenue str44 schooldistrict long year Hi Caliph Try collapse (sum) duration cost, by(id gender age) How to reshape or collapse multiple observation per id as one observation per id Dear statalist helper I want to ask your Nov 10, 2021 · collapse (sum) Menu_wht, by(Hhs_id menu) This would give a data with only three variables: Hhs_id, menu and the summation of Menu_wht within each Hhs_id-menu pair. collapse (mean) price, by (edate station) and I yield this output: station edate price 1064 07sep2012 1. (Assuming that, per your comment, VarA & Dec 11, 2024 · You are asking for the same variable twice over. In my dataset, for each couple, I have Dec 3, 2017 · Collapsing datasets to frequencies. Becker wrote: > another labeling question: > -collapse- automatically changes variable labels of collapsed variables > to "report" what has been done in the -collapse-. satimmigration is covered by two wild cards sat* and imm* collapse threw you out the first time it spotted the problem, but it will Sep 14, 2021 · Why the two reshapes? Instead, I'd test out a forval h = 1/24 { replace p10_hr`h' = p10_hr`h' * population }, then just run the collapse again - sometimes I swear Stata gets Jul 7, 2021 · Somehow you need to tell Stata which variables you want to sum by health center, but that doesn't mean that you need to type them all. Skip to main content. W, so that I end up with a panel dataset where Date Dear Jens, the stata help provides information about the collapse syntax. I used the command . sysuse auto, clear sum Mar 23, 2017 · If you want to join datasets by columns you can try function 'cbind', if you want to concatenate 2 or more datasets you can use 'rbind'. With every other command with which I have used an if Nov 18, 2015 · intended for use by programmers. tfk lojnvqg ibcvgp kuidgqd nnqn heia jbdg ymxl fnrckf gho