Stata generate variable by group

15 Nov 2021

Stata generate variable by group. Code: In Stata you can create new variables with generate and you can modify the values of an existing variable with replace and with recode. Re: st: Generating percentiles. This option has an effect only when if or in is speciﬁed or if there are missing values in the variables. I want to first sort by group and date, and then perform a cumulative sum over one of the variables, but by group: In each group, I want to sum all previous values of the variable in that group, and then record this rolling or cumulative sum as another variable. For example, ID 1 had 3 jobs, ID 2 had 1 and ID 3 had 3. Uses egen count () with by, to create two new variables recording the raw number of employed / unemployed people in the region. Computing new variables using generate and replace. decode female, gen(sex). Nick Cox. You can use egen with the cut () function to do this quickly and easily, as illustrated below. If you have four variables, agegr, died, alive and total, you might be happy with. Sep 30, 2020 · I want to sum up all values in the third column 'expgrp_total' by year and create a new variable filled with the summed value for that same year across the rows. merge m:1 wpid using wpchar. Jan 28, 2022 · 0. Code: gen double hhid_new=clusterid*100+hhid. What is probably nicer is. 5 then all temperatures less than 20. There is also a command -egen, cut ()- that is sometimes used for this purpose. References Cox, N. sort eid egenotype. 2 are reflected as 20. Nov 16, 2022 · You can create lag (or lead) variables for different subgroups using the by prefix. Loop through the two variables, calculating the group-specific mean, and adding 1 to above_grp_means if the value is above the mean. We copy the observation number of first occurrence to Feb 21, 2015 · Convert continuous variable into categorical groups. after which we can type. 3) identiﬁes the name of the variable for which summary statistics are to be reported. sort wpid. I am pretty sure to use something with bysort, generate and May 18, 2011 · Summing those 1s and 0s cumulatively gives the desired variable. For this, we first initialize a variable: . where is a str1 in the following example: . rename whatever pre=fix: Adds preﬁx pre and sufﬁx fix to all variables selected by whatever. Apr 28, 2019 · Grouping observations in Stata. To obtain the group frequencies ni, we type. 2002. Code: gen lag_liquidty = L. Feb 13, 2015 · This is the Stata code I used to divide a Winsorised & centred variable ( num_exp, denoting number of experienced managers) based on 4 quartiles & thereafter to generate the highest & lowest quartile dummies thereof: egen quartile_num_exp = xtile(WC_num_exp), n(4) gen high_quartile_numexp = 1 if quartile_num_exp==4. replace variable = something. The most direct is just with a series of -generate- and -replace- commands conditioned on the binning variable falling in between two cutpoints. duplicates drop firmid year, force. Use input to type in your own dataset fragment that others can experiment with. (For some reason, running average and moving mean aren't expressions I ever hear. When over() is supplied with multiple variable names, each subpopulation is assigned a unique default identiﬁer. Oct 2, 2016 · Duplicate each row as many times as is given in a variable. generate insample = OK & (_N - _n) < 100. ratiosc would therefore be 10/15 in case of state==1. If I do. Nov 16, 2022 · The expression can refer to numeric or string variables or to a combination of the two. Stata Journal 2: 86–102. sort OK random . First, we read in that dataset, sort by that variable, and then we tag the first observation within each distinct group. income, age) Do both commands create exactly the same variable (quartile)? Nov 16, 2022 · Let us illustrate with the simplest example, computing the number of distinct observations on a single variable, rep78, in the auto dataset. 1 It is a built-in system variable that contains the number of the current observation. Second, what if missing values are present? For numeric variables, missing counts as higher than any other numeric value, but egen, max() is smart enough to ignore it. For instance, for entity 1, year 2010 I would have 2 (The aim is to avoid double counting!). Hi, say you want the 25th percentile: sort year by year: egen p25 = pctile (price), p (25) Hope this helps! Mario On 7/16/05, Yvonne Capstick < [email protected] > wrote: > > Hi, > > I am able to generate easily the median of a variable for a given year, e. Fri, 28 Dec 2012 09:54:34 -0500. rename whatever =jan: Adds sufﬁx jan to all variables selected by whatever. Aug 23, 2018 · Forums for Discussing Stata; Generate new variable--percentage change 22 Aug 2018, 18:32. Of course, to use the by command we must first sort our data on the by variable. Making some assumptions about your variable names, this should work: bysort sex agecat state : egen avgincome=mean(income) Jeph. local statistics N mean sd min max p1 p5 p10 p25 p50 p75 p90 p95 p99. : Oct 8, 2015 · I want to generate new variable ( sum1) which contains a sum of daily observation for var1 for each company and specific time interval. Code: unique_identifier group value. The separately calculated baseline functions are then retrieved. Stata 5: Creating date variables. 02 Oct 2016, 11:06. Code: tabulate agegr died ,row. yvar options ascategory speciﬁes that the yvars be treated as the ﬁrst over() group; see Treatment of bars under Remarks and examples below. 07 Mar 2020, 22:58. ly/statacoursefilesDisclaimer: I used to work with S Nov 10, 2020 · This will create groups with (almost) the same number of units in each. And the option group (#) specifies the number of equal frequency grouping intervals to be used in the absence of breaks. A dummy variable is a variable that takes on the values 1 and 0; 1 means something is true (such as age < 25, sex is male, or in the category “very much”). e. The data is divided based on variable "total_assets " from the largest to smallest. Nov 12, 2014 · tabulate agegrp died. Missing Values can be ignored. expand gfreq. 50 different industries) I found how to do it for one year with: by sic_2digit, s Using _n and _N in conjunction with the by command can produce some very useful results. It is a string, and Stata automatically created the shortest possible string. program define my_summarize. by rep78, sort: gen nvals = _n == 1 Nov 5, 2018 · Using: egen agegrp1 = anycount (age*), value (0,5) This successfully counted all children between 0 and 5, but following this methodology, I'd need to create a new variable for each age group of interest which seems like an inefficient way to go about this. Let’s use the auto data for our examples. 65 Aug 19, 2021 · If you have panel data and your goal is to graph mean income over time, you do not need to create extra variables. What I would like now is the have groups such that in every group, the total of another variable is the same. 65K views 11 years ago STATA Training. egen stands for extensions to generate and is used mainly for more advanced operations than can be handled with the gen command. Aug 23, 2017 · - time variable is year - each patient that belongs to a treatment_group in a specific year receives the same "dosage" (of a certain drug). . Code: * Example generated by -dataex-. 1 January 2, 1960. nolabel requests that value labels attached to the variables identifying the subpopulations be ignored. Subject. In Stata 7 and later, this can be expressed as. . Apr 27, 2019 · it just gives an ordinal number to each set of values for the full set of variables; the numbers run from 1 through "n" where "n" is just the number of different combinations of values of the variables used in the group() function; thus, it is essentially a counter for the number of distinct combinations of the values of the set of variables in your command There are two easy ways to create dummy variables in Stata. Sometimes you need to split a variable into groups. This will work irrespective of the number of observations for each eid, the Feb 18, 2020 · The question was really clarification of creating my control and treatment group once I grouped values within a variable. Author. If there are missing values in indcod, list the wpids for which indcod Nov 16, 2022 · In a simple situation, the values of group could be, for example, consecutive integers. by group: generate n1 = _n. Otherwise, collapse will give you means by group. Follow. Describe your dataset. One more important issue you should consider is what you want to do with missing cases in one or two of your variables. It is valuable to experiment with the mod () function to see what results can be obtained. it doesn't delete anything since there are no duplicates (I originally created the dataset after running duplicates drop firmid year, force ). And I needed Stata to deal with a 25000 observation dataset Here's a little of it: id region salaries weight 1 1 1200 23. Suppose you have data on families. sort random . replace wtmedian = r (p50) if group == `i' . describe sex Variable Storage Display Value name type format label Variable label sex str6 %9s Female We have a new variable called sex. Subscribe. Nov 16, 2022 · Here the variable state takes on two values, 0 and 1. In this section we will see how to compute variables with generate and replace. For example, any row which has year of 1962 and state as 1 (Alabama) will be designated as 5 for my new variable. One way to get them is to loop over the distinct values of group, calculating the medians one by one. Creates a fifth new variable, the unemployment rate I actually want, by Mar 7, 2020 · Creating a group ID based on multiple variables: no bysort & no weights allowed. 2 are then reflected as 23. not sorted. Also Apr 4, 2020 · I'am new in this forum. help max() . generate long obs = _n. Date. dataA. summ return_on_invested_capital, detail. 3. Hello Statalist, I am attempting to create a group ID which identifies each unique combination of the variables "investorid", "AnnounceDate2", and "uniqueinvestmentid" in the example data below. If earlier in your session you typed set type double, the new numeric variable would 6[GSW] 11 Creating new variables generate with string variables Stata is smart. We realize that Jan 1, 2017 · Gvkey is unique firm id. If one dataset includes distinct groups that the other does not, you likely will Feb 27, 2020 · In my Stata data set, what I want to do is create a new variable (abor_rest), and assign the value of abor_rest from my excel file to my Stata data. See [D] egen for more information. In other words, I need to an identifier based on either id or id2 (or both) remaining constant over time within a given cluster. In panel 2, the individual is in state 1 only from time 3 to time 5. If there are more than one groups, you then have to split off each value rename whatever pre=: Adds preﬁx pre to all variables selected by whatever, however whatever is speciﬁed. Each individual belongs to one or more group. 4. So, for example, my data has the obs , group , and flag variables, and I want to generate the variable grpflag . Nov 16, 2022 · Order of occurrence in the data is encapsulated in the set of observation numbers, so we put those in a variable: . pwcorr displays all the pairwise correlation coefﬁcients between the variables in varlist or, if varlist is not speciﬁed, all the variables in the dataset. Mar 11, 2021 · Good, and pleased if this was helpful, but your question is still not clear: (1) we can't test your code mentioning TA_envi_sum because it is not a variable in the data example; (2) you don't say what you did get. Below is example of dataset. sort group score. Stata is smart. There was a thread on this in 2008, where it was suggested that I this would work ssc install egenmore egenmore corrxy = corr (x,y) , by (country year) For me Jul 18, 2016 · You create a new variable in Stata using the generate command, usually abbreviated gen. The prefix command bysort does the sorting required and ensures that this is all done separately within the groups defined by group_id. If you have missing values for fee1 or fee2 you'll have to account for those in the fee1 + fee2 expression if you use this syntax. I am trying to create a variable which has the percentile value for the value of a given variable. 21 Feb 2015, 03:10. 8. Nov 16, 2022 · The command contract can be useful for creating temporary datasets including a percent variable. For example, if the 10th percentile has a value of 15. In some circumstances, -recode- can be useful here as well st: RE: generate new variables using the first record of the group (in statalist-digest V4 #5050) Stata has a system variable to number cases. by state: gen lag1 = x[_n-1] If there are gaps in your records and you only want to lag successive years, you can specify. Overall I want to test how various factors have influence on the overall playtime of the players, but now I want to Nov 23, 2013 · I'm trying to generate in Stata the mean per year (e. My command is this: bysort round_year ( firm_id_new) : gen ind_patsubgrp_total = sum ( expgrp_total) I was expecting in the 4th column to have the total value 75 for all 1978 rows, and For example, you might want to convert a continuous reading score that ranges from 0 to 100 into 3 groups (say low, medium and high). Re: st: Creating a Variable for the average by subgroup for a panel dataset. Nov 29, 2021 · I have one question related to counting distinct values by groups. The data looks like. I groups states that expanded medicaid into a 1/0 variable -statemedicaid-Now that is created, I want to make sure that my treatment and control groups are accurately created. N. So that means for every observation in the group, the max variable would have the same value. gen seq2 = mod(_n-1,6) + 1. If all the values of egenotype are the same for each eid, then, after sorting the first value within each, eid will equal the last. You can record dates anyway you want, but there is only one technique that Stata understands, called an elapsed date. I am using Stata 14. The encode command turns categorical string variables into encoded numeric variables, while its counterpart decode reverses this operation. Jun 15, 2015 · 03 Dec 2017, 14:08. The random numbers will not actually be between a and b, they will be between a and nearly b, but the top will be so close to b, namely 0. Stata Journal 20 Sep 6, 2018 · Here's one way to do this. ly/statacoursefilesDisclaimer: I used to work with S necessary because tsset will assume that the variable is generic if it has any numerical format other than a %t format (or if it has a %tg format). Sep 30, 2021 · I would like to calculate the mean of my average stock returns grouped by another variable, which splits my oberservations in 3 groups. Jun 27, 2016 · In Panel data, I would like to generate lag for dailyMR and lag for liquidity. So the new variable should look like id3 below: Nov 14, 2018 · Creating the binning variable can be done in a number of ways. I want to generate a variable expressing the ratio between the total of cities sized 1 and the total of cities sized 3 per state. list. Having flagged the nth observation in each group, you can copy it. foreach s of local statistics {. Thus, I would like to create a variable "a" which refers to variable"x" in the following pattern: over() variables. sort state year. I agree with this solution, except for the rowtotal piece. If there is any variation within eid, this will not be true. Example 3 We wish to create a new variable, age2, that represents the variable age squared. Aug 3, 2015 · Note that (per the comments) you can use egen income = total (fee1 + fee2), by (tinh huyen xa diaban). E. If you do not specify this option, a table of frequencies is produced; see[R] tabulate oneway and[R] tabulate twoway. generate new variable, firm_size, with categorical 1,2,3 and 4, based on the four equal group. You could well install it and study its detailed help. Save your dataset beforehand. 2. EMI_SOX should be the average of EMI_SOX_e minus EMI_SOX_ie. Feb 18, 2017 · The Stata functions max() and min() require two or more arguments and operate rowwise (across observations) if given a variable as any one of the arguments. I would like to have a dummy, that yields 1 if the dosage of the treatment_group was negative for three consecutive years. e. 2002-2012) for each industry (by 2 digit SIC codes, so c. There are several ways to achieve this in Stata, in this post we’ll use the egen command. gen `s' = r(`s') in 1. This is because <egen group> sorts the data by the variable list and assigns each distinct group an integer value. This is just a running mean or moving average. by group: gen gfreq = _N. tab _merge. list make foreign make foreign 1. Now the trick needed is to work on this expanded dataset so that pairs are Title. Nov 16, 2022 · Title. Now use the employee file and give the commands. If you specify adjustfor() with strata(), sts generate ﬁts a stratiﬁed-on-group Cox regression model, using the adjustfor() variables as covariates. Nov 16, 2022 · Read the file into Stata with infile wpid indcod, sort wpid , and save as Stata dataset wpchar . The score variable for the total estimator is the variable itself, z j(Yb) = y j The poststratiﬁed total estimator Let P k denote the set of sampled observations that belong to poststratum k, and deﬁne I P k (j) to indicate if the jth observation is a member of poststratum k, where k = 1; :::; L P and L P is the number of poststrata. Similarly for temperatures between 20. SE Sep 27, 2022 · Generate sum variable for subgroups. No need for egen at all (a command that many people who only use Stata occasionally often find bizarre). Examples: data on families. We can create dummy variables using the tabulate command and the generate( ) option, as shown below. In this format, 0 means January 1, 1960. exactly!" 3. I want to store that variable in my dataset. We will illustrate this with the hsb2 data file with a variable called write that ranges from 31 to 67. Here is an example of the data with ID, year, and the job code (i. Let’s begin with a simple dataset that has three levels of the variable group: input group 1 1 2 3 2 2 1 3 3 end. This means that rows 741-746 would populate as 5 under the abor_rest column. gen above_grp_means = 0 foreach x of varlist var1 var2 { bysort group: egen mean We can create a real string variable from this numerically encoded variable by using decode:. Here is an example. ascategory is a useful option. We’ll look more at the egen command in Oct 25, 2022 · Creating a vector with unique observations from a variable in Stata 0 How to see tabulate/table/display of frequency that different groups take on values of a variable Aug 4, 2017 · This is what I want to do: 1. An example solution. I try use the code below, but the result appear was "not sorted" r5. As we will see shortly, in most cases, if you use factor-variable Jul 19, 2016 · I have a dataset with grouped by a particular variable. Oct 31, 2013 · I'd like to create a new variable that takes a value of 1 for all observations in a group if, for any of the observations in the group, X is true. One way to do it is: Code: capture program drop my_summarize. Speaking Stata: Concatenating values over observations. STATA Tutorials: Creating a Grouped Sep 29, 2014 · I want to generate a new variable with mean values. Save. I want to divide the variable "PERMNO" set into four equal groups, each group comprising a quarter of the data. From data below, it seems all sorted according to company and caldate. For example, if you want two groups of equal size . As we will see shortly, in most cases, if you use factor-variable Jun 3, 2020 · I am using Stata version 15 to calculate the number of distinct cases (firm) by a group of two variables (entity and year). J. If stata cmd stores results, only the results from the last group on which stata cmd executes will be stored. 2. 999999999767169356* b, that it will not matter. 92K subscribers. The first observation in each block, defined by a value of id, then carries information on first occurrence. I need to generate a variable representing the correlation between variables x and y, for different countries and years. For example, I want to group households such that every bin has the same total income. You can change the value of an existing variable using replace. Sat, 16 Jul 2005 18:39:53 -0500. Department of Methodology LSE. Sep 15, 2014 · "Say exactly what you typed and exactly what Stata typed (or did) in response. Below is the whole structure, which we will explain step by step. Jun 19, 2019 · At present my approach: 1. The number of observations (rows) in each group ranges from 3 to 20. When you generate a variable and the expression evaluates to a string, Stata creates a string variable with a storage type as long as necessary, and no longer than that. Rule 11: Wildcard = in new speciﬁes the original variable name. Stata: using egen group () to create unique identifiers. 56 1 2048. As we will see shortly, in most cases, if you use factor-variable Nov 2, 2019 · Course: STATA for Complete Beginners 100% Free. Delta Mar 26, 2017 · Your new variable instead would become a growth rate of the log of wage, which is usually not of interest. The stratiﬁed baseline function is then retrieved. each group, using the adjustfor() variables as covariates. will do the trick. Jun 29, 2012 · STATA Tutorials: Creating a Grouped Variable. Sep 8, 2014 · My objective is to find the max of a certain variable for each group and then assign generate for every observation in a particular group a new variable that equals the max. clear—used in tsset, clear—makes Stata forget that the data ever were tsset. Use the advanced editing options to appropriately format quotes, data, code and Stata output. Stata has some utility commands for creating new variables: The egen command is useful for working across groups of variables or within groups of observations. Learn how to use the pctile command in Stata to compute percentiles and their confidence intervals for a variable or a group of variables. My data set has three variables: year, company, and profit. Apr 10, 2017 · So what I need to do is to create a new variable (variable: id3) to track the same product over time. Aug 16, 2015 · Hi, I would like to count the frequency of an observation within a variable. : let`s assume in state 1 there are 10 cities of size 1 and 15 cities of size 3. Apr 16, 2016 · 2. generate double u = (b–a)*runiform () + a. We need to be able to deal with both patterns, recognizing that the state concerned may be absorbing or just temporary. I have a dataset where each row is a firm, year pair with a firmid that is a string. Improve this answer. You should find that all employees now have an indcod variable defined. How do I generate a new variable with the "mean" or "median" values for the same subgroup of people? Later on I want to use the mean values for each subgroups as the y in an x-y graph. The correlate command displays the correlation matrix or covariance matrix for a group of variables. Nov 16, 2022 · How do I create variables summarizing for each individual properties of the other members of a group? As from 2016, the community-contributed program rangestat (SSC) offers an alternative to solutions here. Dummy variables are also called indicator variables. I have here a Steam Dataset which includes individual steam user and their playtimes (overall) and the games they played. For SOX_size3: 1 means efficient and 3 means inefficient. B. What I am looking for is to create a variable (or collapse data) that shows how many jobs they have throughout the year from 1994 to 1996. then, as suggested. Share. Noninteger values, negative values, and labels that are not valid Stata names are substituted with a default identiﬁer. by group: generate n2 = _N. merge 1:1 gvkey yrmth using dataB. score group id nt n1 n2. sysuse auto, clear . generate group = ceil(2 * _n/_N) creates a variable with two categories, 1 and 2, with approximately equal numbers in each category. Now we sort by id, breaking ties by obs. Only if all values in a group are missing will the result variable be missing. Aug 13, 2015 · Code: egen concat hhid_new=(clusterid hhid) This however generates a string variable. The manual explains the syntax, options, and examples of the command, as well as the output and stored results. For example, . I KNOW how to generate a new variable based on "sum" function for at subgroup of people. Dear Stata users, In the funtion -egen-, we can invoke - egen newvar=cut (var), group (#) - to generate a new categorical variable. If varlist is not speciﬁed, the matrix is displayed for all variables in the dataset. Jun 12, 2014 · I am trying to do something conceptually fairly simple. Oct 11, 2016 · My first time posting on this forum. I need to merge individuals to group characteristics, by firstly duplicating each row of individual data set as many times as is given by `n_groups`. Creates two dummies, with values if the person is employed / unemployed (respectively), and missing otherwise. 15 2 1 500 7. Use list to list data when you are doing so. But actually this sentence cannot always give us equal frequency groups. g The Stata command for this is expand; see [D] expand. This is a rarely used programmer’s option. The manual also compares the pctile command with the centile command, which is another way to calculate percentiles in Stata. Using missing values as initial values is arbitrary. sysuse auto, clear Nov 16, 2022 · First, we sort the data on eid and then on egenotype : . Again, the observation years varied from cluster to cluster. Code: egen yrmth=group(year mth) However not all months in a given year are populated for each dataset, if I use egen yrmth, then. The basic syntax is the same for both commands: gen variable = something. An elapsed date is the number of days from January 1, 1960. Stata has a command to create panel data line graphs. If the data are sorted, this can be restarted in each group. by repeats the stata cmd for each group deﬁned by varlist. You may need to adjust the number of 0s (if there are clusters with more than 10 households you need to adjust the syntax. Then recode above_grp_means to a binary flag. VW Rabbit Foreign 2. Alternatively, but with a higher risk, a preserve just before a keep or drop saves a copy of your current dataset, to which you can return on a restore given later in the same session. Feb 11, 2018 · thank you for your fast reply and please excuse the ambiguous wording. multiply by 1000 instead of 100). quietly forvalues i = 1/50 { . g. Code: Nov 16, 2022 · . If the interval was equal to each year I would use the function total (): bysort id year: egen sum1=total(var1) In my case however, the time interval is determined as an interval between two events. ) So you need to tsset or xtset your data and then look at help tssmooth ma. Speaking Stata: How to move step by: step. William Gould, StataCorp. If you want two or more distinct random subsamples, you can extend this approach. Sep 6, 2019 · Course: STATA for Complete Beginners 100% Free. In panel 1, state 1 first occurs at time 4, and the individual remains in that state. Code: webuse nlswork, clear. The egen functions max() and min() can only be used within egen calls. Jul 18, 2012 · If you want to generate continuous random numbers between a and b, use. gen wtmedian = . Here a loop controlled by forvalues is easiest. Start with an all-zero counter variable, above_grp_means. liquidity. To download exercises and course files access:https://bit. For example, to generate the repeated sequence above, type. I've studied Stata at my university for about 2 years, and now i'am preparing a paper for my graduation. 2 and 23. , job_code). - the object of interest (for now) is the treatment_group, not the patient. If your question hinges on getting a variable name wrong, it's unlikely to be of use to anyone else and on that ground should be generate— Create or change contents of variable 5 set type When you create a new numeric variable and do not specify the storage type for it, say, by typing generate y=x+2, the new variable is made a float if you have not previously issued the set type command. Even though we did not specify the storage type in our generate statement, Stata knew to create a str9 lastname variable, because the longest last name is Bimslager, which has nine characters. Code: use dataA,clear. Title. Suppose that you want weighted medians. sort group. Documented at e. If you situation is still different and you need more help, please explain in more detail. Since replace can destroy data, it has no abbreviation. summarize response [w=weight] if group == `i', detail . I would like to create a group variable which tells me in which quartile an observation falls into according to the value of a variable. Code: generate newvar = alive/total. I have tried to do that in this way: by group year: xtile quant=x, nq(4) by it didn't work. I further divided the player in hardcore (=1) and casual player (=0). answered Jan 28, 2022 at 14:47. 2020. Oct 4, 2022 · So code-wise I did the following: bysort group year category: gen cat_obs = _N bysort group year : gen sum_GY_obs = _N gen mean = cat_obs / sum_GY_obs foreach i of num 1/2 { gen cat_`i'= mean if cat==`i' } The term column although understandable from elsewhere, corresponds to the term variable in Stata. by group, sort: gen gfreq = _N. Given that we can’t merge on 3 variables, I plan to use egen group to create a time ID. Given that Ludmila has panel data and assuming that it is properly xtset, it would be best to make use of the time-series operators, e. So far so good. Sep 17, 2021 · 17 Sep 2021, 22:10. Does anyone have an idea what is wrong with my data. The description here concerns tabulate when this option is speciﬁed. 1. 12 1 5005. I have a set of individuals with characteristics. Nov 18, 2016 · In the example below I generate 3 relevant values 1=if the first (and only the first) politician approves, 2 if the second (and only the second) politician approves and 3 if both approves. by state: gen lag1 = x[_n-1] if year==year[_n-1]+1. Creating dummy variables. Alan Riley, StataCorp. Does anyone know the difference between the following two commands? Code: egen variable_name = cut(X), group(4) xtile variable_name = X, nq(4) * Continuous variable X (e. To install: ssc install dataex. Jan 31, 2015 · 31 Jan 2015, 02:59. allcategories may not be combined with by(). ob ym ok pe yo xx cw qh tb jz