Stata count across variables For an extended version of this FAQ, see Cox and Longton (2008). I want to generate a variable that tells me how many ID´s each place has. The last line generates a new variable with the number of observations per industry and year that have no missing values for all independent variables. If there is a most frequent value, choose that one, if there is not, choose the highest or first, or in some other cases the mean or sum (to be defined for each Jan 28, 2013 · What is the easiest way to create a new variable, 'over_three_less_than_six' to count how many people per location gave 3 or more gifts but less than 6. And apparently a given pair of origin and destination values can appear more than once, and you would like to get the total of the prices over all those pairs. tabulate dup to see a report of the duplicate count. We will create a dummy variable that is 1 if the kid is a boy (0 if not), and a dummy variable that is 1 if the kid is a girl (and 0 if not). 2 Nov 16, 2022 · Stata has two commands for performing all pairwise comparisons of means and other margins across the levels of categorical variables. References Cox, N. Also see Actually -x1 x2- was just an example. . Longton. colmissing(X) returns the count of missing values of each column of X, rowmissing(X) returns the count of missing values of each row, and missing(X) returns the overall count. 2002. Edit 2: I am terribly sorry for causing such ruckus over something simple. 2. Check out the new MSN Search! Each observation in my data represents a respondent. 3. It is a built-in system variable that contains the number of the current observation. An example: ID age_event1 age_event2 age_event3 stop_age sum_event 1 10 17 45 34 2 2 23 31 32 54 3 3 25 55 . May 29, 2016 · As I understand it you want to count occurrences of 2 in values that are in each observation across a set of variables. J. Sep 30, 2020 · I use Stata 13. I guess there might be a command to give me number of variables (columns). 2007b. My apologies. J. 2007a. Creates a fifth new variable, the unemployment rate I actually want, by calculation from the raw numbers. From: Suzy <[email protected]> Prev by Date: st: summing the values of all observations of a variable in Stata 8. S. The sum of the boy dummy variable is the number of boys and the sum of the girl dummy variable is the number of girls. Mar 9, 2017 · I have a data set in which a variable need to be combined to create a row total (score). The solution. what you think might work if Stata worked the way you would like it to. I have tried this: egen Counter = count(ID), by (place) But I get a type mismatch. The command egen newvar = count( stringVar ), by( groups ) does not work ( type mismatch r(109); ). Stata Journal 2: 86–102. stubwidth(#) specifies the width, in units of digit widths, to be allocated to the left stub of the table. M. I have to calculate a new variable that is the total amount of money from several variables, all displaied in a row. 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. Nov 11, 2014 · I would like to create a variable (sum_event) which counts the number of times the event of interest occurred prior to the stop age. in a number of variables (columns). Besides the first variable id, which gives an identifier, the other variables (call them A to Z) contain either interesting strings or missing values indicated by ". One that includes the count of all the 0 and one that has the count of all the 1 for each person (row). Quick start Count the number of observations count As above, but where catvar equals 3 count if catvar==3 Count observations for each value of catvar by catvar: count Menu Data > Data utilities > Count observations satisfying condition Syntax count if in by is allowed; see[D] by. 15. Last I need to make sure there is only one observation per combinations of "entity" and "year" and therefore combine (merge, collapse, append?) the values of other variables. I need to create a variable nvals that counts the number of unique strings found for any given respondent in A to Z. 0 for Mac Hi Daniel, Thank you very much for your help. May 31, 2021 · Equally common is the need to show row percentages across the column variable, in this instance, the yes/no values of hypertension. I would like to take the missing values into account. For example, in the example above there are 3 missing values that are not the only missing value in that panel. Jan 28, 2021 · 3. In the main problem the number of variables in the varlist is not pre-determined and depends on the syntax that user uses. I have read some threads on this matter and tried egen, count method that was recommended but did not succeed. 1 and I couldn't get the results I want. missing()—Countmissingandnonmissingvalues Description Syntax Remarksandexamples Conformability Diagnostics Alsosee Description Nov 29, 2021 · 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. Stata ***** Create a variables that counts the number of variables for analysis (iv + dv + covariates) that are missing egen sample_nmiss= rowmiss ( var1 var2 var3 var4 var5 ) ***** Create a flag to identify those in the analytic sample. colnonmissing(X) returns the count of nonmissing values of each column of X, rownonmiss- Besides the first variable -id- giving an identifier, the other variables (call them -A- to -Z-) contain either interesting strings or missing values indicated by ". Apr 10, 2015 · So I interpret what you wrote to mean that you have three variables: origin, destination, and price in your data set. Stata tip 51: Events in intervals. May 14, 2020 · The second line sets the new variable miss to missing if any of the values of the independent variables are missing for that observation. For instance, variable salepric has four missing values and saltoapr has two missing values. I would like to count: 1) the unique appearance of 3001-3008 across activ1-active27 for each idpriv 2) the total count of any value within the range 3001-3008 across activ1-activ27 for each Apr 10, 2022 · Hello, How can I count string values (Topic_1 through to Topic_4) across multiple variables ? I want the count to be in the variable _NTopics. I figured it has something to do with string variables, but I could not find a solution. Stata v. Feb 18, 2016 · I came across this discussion while searching for how I can add multiple rows by id and year. _n is 1 in the first observation, 2 in the second, 3 in the third, and so on. The "egen count()" part simply counts the number of non-missing observations in col1 and puts the count into the new variable col1_count, but because we're prefixing with the "by" part, it will calculate a separate count for each value of col1, which is what you want. Is there a way to use 'egen' as mentioned in #2? My variables have same prefix as mentioned above. Distinct observations. Each patient has: an ID-number, an ID-number for the physiotherapist and an ID-number for the clinic. 1. I want to generate a variable that count how manay 1s, 2s and missings are there v1 - v6. From "Eric Booth" < [email protected] > To < [email protected] > Subject st: RE: counting the number of nonmissing values in varlist for each observation: Date Mon, 28 Dec 2009 10:50:35 -0600 Nov 16, 2022 · Different sequences of consecutive numbers can be generated by using an expression that includes _n for x and by setting y equal to the total number of observations within each repeated pattern. suppose i have a data set with say, many variables. Obtaining the number of missing values per observation. Mar 19, 2018 · I have a dataset with variables var_1:var_200 as well as a variable id that takes values 1:200 as well, so that the total dataset has 200 rows and 201 columns including the "id" variable. Speaking Stata: Making it count. To base the duplicate count solely on name, type Nick [email protected] Jason Thompson > Is there a Stata equivalent of the SPSS count function, which > counts the > number of occurrences of a particular value amongst a set of > variables? > Something like this: > > count (newvar)=a1 to a21 (5), which assigns newvar the number > of times > a1-a21 equals 5 for each case? > > Nothing in egen Jan 15, 2015 · I want to call the variables from the local varlist for (mean) in collapse, but couldn't so used totasset-totveh (which I want to avoid as this includes additional variables. Speaking Stata: Counting groups, especially panels. Jun 6, 2023 · You can create the variables for the count of the variables with missing values. From: Suzy <[email protected]> References: st: summing the values of all observations of a variable in Stata 8. I have three variables coded 1 to 15, where the meaning of each of the codes is consistent across the three variables, what I would like to do is to produce output which uses information across all of the variables and gives me the number of time value 1, value 2 etc occurs across the three variables a fixed number, but a number chosen by table according to what it thinks looks best. This is easy in R, but I'd like to stay with Stata for this project. Alternatively, in a slightly different arrangement, a table that combines the results from multiple tabstat results, showing total case count, count of cases with the yes value, and percent with yes, all properly formatted, would be very helpful as well. Jan 19, 2018 · Using Stata/MP 14. Entries can take values 0, 1, or 2 (I use Stata/SE 11). We can do that with one extra step. I actually needed both, counting the number of variables with value "2": egen var1 = anycount(var_101-var_110), values(2) and computing the sum across these variables (sorry for the imprecise question). I tried the count if command but that does not allow me to get the number of "1"s for each participant across the 20 side effects. Aug 16, 2015 · I have a dataset where each person (row) has values 0, 1 or . 95-105. What I did is to reshape the dataset as follows and then use -gen- and -egen-. My data is in long shape. count if q1 == 5 Data in this structure may be used easily for analyses of subsets defined by separate answers, either a particular subset or several subsets. Mar 26, 2023 · Across these variables, the values I am interested in are 3001-3008 (these values represent specific categories of activities a participant has engaged in). We use count command to count the number of observations that meet a specific condition. tablemultiway—Multiwaytables Description Quickstart Menu Syntax Options Remarksandexamples Storedresults Reference Alsosee Description Inthisentry The second line runs the count command separately for each value of col1. You can do the above by using by:, which is one of the most versatile features of Stata. count if q1 == "Stata" or if q1 is a numeric variable in which Stata is represented by 5, type . However, we can make the count command more valuable by applying specific conditions. ucla. Below is an example with last three columns need to be generated. x* means any variable starting with x. Sep 24, 2020 · If V1=10, I want to count how many responses from V2 are 3 and make that as a new variable. Thank you! count—Countobservationssatisfyingspecifiedconditions Description Quickstart Menu Syntax Remarksandexamples Storedresults References Alsosee Description count stores the following in r(): Scalars r(N) number of observations References Cox, N. Re: st: summing the values of all observations of a variable inStata 8. The command in the STATA command window will be: count. The information yielded by count, and more, is Jan 20, 2021 · I want to calculate the number of A values when at least one A value is not missing in that panel in Stata. using the '*' operator)? thanks again! kj _____ Don t just search. I feel like this is a simple problem and I am sorry for the repetition in question. Note that in Stata an observation is an entire row of the dataset, not the value of a single variable. 2. Let’s see how _n and _N work. So I guess the best way to do it would be: global count: word count `varlist' thanks again Ali After . For rcpoisson, see Right-censored Poisson regression model, Stata Journal 2011, 11(1) pp. Then we can pick up the number of children from the other variables in the last observation, subject to conditions to be mentioned in a moment. I want it to ignore missing values. oarc. I would like to count for each observation the number of variables that meet a certain condition, say var*==2. how can i create a new variable that is the (arithmetic) mean of all the variables starting with certain letters (i. The Results window will display not more than the total number of observations, which is 74 in this case. We can also look at the distribution of missing values across observations. Nov 16, 2022 · (Stata interprets _N to mean the total number of observations in the by-group and _n to be the observation number within the by-group. Cox, N. Thank you in advance! P. Stata Journal 7: 117–130. These functions return the indicated count of missing or nonmissing values. and G. count. Within each family, we are going to sort on this variable, so that all the children of person 1 come at the end of each family. 1 for Mac, I have the same issue as Frauke: I get a type mismatch when attempting to count a string variable through egen. This number increases from 1 at observation 1 (cd1 first occurs), to 2 at observation 2 (cd2 first occurs), to 3 at observation 4 (cd3 first occurs), and so forth. e. Now I would like to sum first across all rows, and secondly across all but the first column (I could drop the first if necessary). It was basically a function di c(k) that returns the row numbers. I have about 15. Sorry for not having found the corresponding text via the -help- function before. Speaking Stata: How to move step by: step. Mar 5, 2021 · How to count the number of missing values? I have a simple question I would like to know asap. One long way is to add each variable (close to 70 variables all with the suffix Adj). Stata Journal 7: 571–581. ". One of them is an ID and another one is Place. Apr 12, 2022 · Column 1 counts how often the letter a,b,c,d are prevalent in the variable 1 to 3 across all rows; Column 2 counts how often the number a,b,c,d are prevalent in the variable 4 to 6 across all rows; Column 3 subtracts 2 from 1; The data looks like this: Nov 16, 2022 · If q1 is a string variable, type . How I can count the number of missing (or NULL) values in distinct from 0 values? Note Added I have tried to use some functions listed below, but I don't know if these functions could distinguish the missing values from 0 values. Materials prepared by my former teaching Mar 10, 2017 · I am doing my analysis and i need some serious help to create a new variable. mdesc; missings specified, count displays the number of observations in the data. edu I want to count how many variables are saved in my local y but Stata keeps reading "y_*_x" as one word and so when I run: scalar var_count = `:word count ` y '' di var_count Nick [email protected] Jason Thompson > Is there a Stata equivalent of the SPSS count function, which > counts the > number of occurrences of a particular value amongst a set of > variables? > Something like this: > > count (newvar)=a1 to a21 (5), which assigns newvar the number > of times > a1-a21 equals 5 for each case? > > Nothing in egen Jan 19, 2018 · I have a number of variables. Is there any way to do this without reshaping the dataset--that is, is there any better way to calculate the measure across variables and observations? Thanks in advance. I'm using panel data. So in the above example the new column would output: Sep 10, 2021 · To get a count of 'received' friends, I need to get a count for how many times an ID appears across all columns and rows of the dataset. The default is not a fixed number, but a number chosen by table according to what it thinks looks best. Daily dates are best held as numeric with an appropriate daily date format, so the first is more useful here. For example, ID 1 had 3 jobs, ID 2 had 1 and ID 3 had 3. Now we know the number of missing values in each variable. describe <varlist> r(k) contains the number of variables in <varlist>. We can also count missing values and use multiple conditions using " Nov 16, 2022 · Each observation in my data represents a respondent. The pwmean command provides a simple syntax for computing all pairwise comparisons of means. temp_26849_1649584 Jun 19, 2019 · 2. Dedicated egen functions for the number of distinct numeric and string values across an observation in several variables are included in egenmore from SSC. See full list on stats. _n is called an “underscore variable”. Dear STATA list members, I am working in a program to estimate an index similar to the Index of Human Development (PNUD, various years), and I need to find the maximum and minimum value of several variables across 2500 observations, I will then use these values to normalize the variables. 2007c. My command is this: bysort round_year ( firm_id_new) : gen ind_patsubgrp_total = sum( expgrp_total) I can't make much sense of this, but it looks like fantasy syntax to me, i. Stata, Revised Edition, and also the 2014 3 rd edition of Long & Freese. Nov 16, 2022 · I want to keep track of the number of distinct values seen so far in the sequence. 000 participants in my data, alligned as rows. On Mon, Oct 26, 2009 at 2:54 PM, Martin Weiss <[email protected]> wrote: > > <> > > > Note, however, that there is a hazard involved when specifying a -varlist- > that encompasses all variables between "x1" and "xn" via the dash notation: > The number of variables between them changes with the -sort- order, as seen > after -describe- (see [U Jan 24, 2023 · I want to count the number of "1"s for each participant and ultimately summarize the number of participants that experienced one side effect, two side effects, three side effects, etc. Stata Journal 7: 440–443. Rather than using the g = var1+var2 etc which could be annoying considering the amount of variables and the fact that I have to repeat this command several times I was trying to look on internet for a solution. Nov 16, 2022 · distinct reports on distinct values, egen, nvals() computes their number in a new variable, and unique does some of both. In my case, there is no pattern in the variable names. Jul 6, 2020 · Edit 1: There is a command to count the number of observations (rows), i. _n is Stata notation for the current observation number. For instance, to count the number of cars with prices above 5000, we can use: count if price>5000 Stata has two built-in variables called _n and _N. 4. Code: Apr 12, 2022 · Dependent Variables, and Long & Freese, 2003 Regression Models for Categorical Dependent Variables Using . _N is Stata notation for the total number of observations. Uses egen count() with by, to create two new variables recording the raw number of employed / unemployed people in the region. " I need to create a variable -nvals- that counts the number of unique strings found for any given respondent in -A- to -Z-. Find. Say my dataset includes 10 observations and 10 variables, var101- var110. 2008. I would like to create two variables. They are rownvals() and rowsvals() respectively. ) Having created the new variable dup, you could then . I found the command finally. I use STATA 14. Drops the variables used only for this process. mxng sze qgd kzot zoyadmy lyqayi vaqozph lkrvb ggn bmbztq