Sum by variables stata To illustrate, let’s use stocks. Your question is Nov 16, 2022 · How do I count the number of distinct strings across a set of variables? Oct 17, 2022 · I have a dataset (attached in . _n is 1 in the first observation, 2 in the second, 3 in the third, and so on. It allows you to specify the list of statistics to be displayed. You have a variable numper, the number of persons per household, and you want the average per Nov 16, 2022 · How do I count the number of distinct strings across a set of variables? Oct 17, 2022 · I have a dataset (attached in . z. Summarize). In Stata terms, duplicates are observations with identical values, either on all variables if no varlist is specified or on a specified varlist; that is, 2 or more observations that are identical on all specified variables form a group of duplicates. We wish to calculate BMI, which is defined as weight in kilograms divided by the square of height measured in meters. dta. Jun 7, 2023 · How do I generate a new variable which gives me the sum of two variables (msf_n_4weeks and msm_n_4weeks) but only assigns a missing value if BOTH of the values for the variables is missing. First time I did: gen sum= row* Stata didn't allow me to do that, but now I did: egen sum = rowtotal (row*) and it's working. where is a str1 in the following example: . I have data for 4 years, and I have a variable that is the "trade value" for each country pair. See [R] table for a more flexible command that produces one-, two-, and -way tables of frequencies and a wide variety of summary statistics. In this workshop, you will learn to use Stata to create basic summary statistics, cross-tabulations, and increasingly rich tables of summary statistics. 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. of persons) per > observation. For example, to take the natural log of v1 and create a new variable (e. g tabstat Allocation_Total, s (n sum) by ( Year2019) by (Infrastructure). Mar 18, 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. Perhaps these ideas Nov 16, 2022 · Sorted by: id The description tells us that the variable height is measured in centimeters (cm) and the variable weight is measured in kilograms (kg). 65 3 2 100 10. 95 5 3 2050 14. rating measures). g. 60 My goal is to calculate weighted totals (sums) of Mar 11, 2021 · I need to generate the variable sum which cumulatively adds up the changes in TA_envi_tot across reporter-partner pairs and years. Sep 30, 2020 · I use Stata 13. Nov 16, 2022 · How do I create variables summarizing for each individual properties of the other members of a group? You could just generate a new variable equal to one if your conditions are met and zero otherwise. 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. Additionally, we demonstrate how a single table command can create multiple tables corresponding to levels of variables or different statistics. 4 System variables ( variables) ated and updated by Stata. They are called variables because their names all begin with the unde The variables are , and multinomial logit). Thus, to obtain population-weighted correlations among mrgrate, dvcrate, and medage, we type Summary statistics are a way to explore your dataset, find patterns, and maybe even refine your question of interest. I just want the maximum number at the very bottom of this cumulative result. Is there any way to let Stata know not to replace by 0 when all the variables have missing values? Up to four variables can be selected as categories and up to five statistics can be specified. Our rate is really the mean of a variable that indicates whether a sampled individual as high blood pressure. The problem is that I need to distinguish when the resultant sum is cero or a missing value. I am trying to get the sum of the other two variables (Tons, Number_of_Barges) by location and time. Alternatively, contract will reduce the dataset to distinct observations and their frequencies. 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. This command may be sufficient for your needs. Description egen creates a new variable of the optionally specified storage type equal to the given function based on arguments of that function. 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). com> Re: st: collapse with multiple sets of weights From: Scott Merryman <scott. The variables that I want to sum up are located consecutively, however, when I run the syntax above I get an error that 'varlist not allowed'. I would like to create two variables. 00 6 3 1435 3. This produces the expected output, but more importantly for our purposes, Stata now has results from the summarize command stored in memory. So, in Stata we don't speak of columns, we speak of variables. The only problem is that when the three variables have missing values, the final sum of that row is 0. _n is Stata notation for the current observation number. In the first example, we get the descriptive statistics for a 0/1 (dummy) variable called female. However, my data (a Stata file) has more than 500 variables with each colu Have you ever worked with a data set that had so many observations and/or variables that you couldn’t see the forest for the trees? You would like to extract some simple information but you can’t quite figure out how to do it. For example I want to know Median weight or age of adults of my survey population. Aug 24, 2022 · No loop is needed for that. 15 2 1 500 7. Aug 16, 2015 · I have a dataset where each person (row) has values 0, 1 or . )? Jun 7, 2023 · How do I generate a new variable which gives me the sum of two variables (msf_n_4weeks and msm_n_4weeks) but only assigns a missing value if BOTH of the values for the variables is missing. Nov 16, 2022 · Question: I have a variable that I can tabulate to get the frequencies and percent and cumulative percent frequencies of its different values, but what I really want to see are the cumulative frequencies. I would like to generate "varD" the sum of each row, e. I've studied Stata at my university for about 2 years, and now i'am preparing a paper for my graduation. For instance, for diagnosis 98 we have variables diag98201 till diag98207, for diagnosis 9 we have variables diag9201-diag9204. Stata will know that it means if foreign == 1 or if foreign ~= 1. In this entry, we discuss how to use the table command to create tables displaying frequencies, percentages, and proportions across levels of three or more variables. Basically I'm trying to extend this question: Stata: Sort, by, bysort, egen Sort order Not only could it be useful, but crucial, to sort your observations in a particular way when cleaning or creating outcomes. pwcorr displays all the pairwise correlation coefficients between the variables in varlist or, if varlist is not specified, all the variables in the dataset. tabi displays the × table, using the values specified; rows are separated by ‘\’. Nov 27, 2023 · Stata also lets you take advantage of built-in functions for variable transformations. egen (see [D] egen) functions total() and rowtotal() by default yield 0 for the total of missings. This works clearly fine when there are no missing values (varD= varA + varB + varC). group over subpopulations defined by varlist; optionally, suppress group labels This page shows an example of getting descriptive statistics using the summarize command with footnotes explaining the output. com Remarks are presented under the following headings: Histograms of continuous variables Overlaying normal and kernel density estimates Histograms of discrete variables Use with by() Video example For an example of editing a histogram with the Graph Editor, see Pollock (2011, 29–31). Quick start Graph means of v1 for each level of categorical variables cvar1, cvar2, and cvar3 grmeanby cvar1 cvar2 cvar3, sum(v1) References: st: need to sum several variables in a row From: Raffaele Palladino <palladino. Remarks and examples stata. Is there a way to solve this? -egen, sum ()- is just the same as -egen, total ()-. First, let’s use the kids file (and clear out the existing data). Options Main detail produces additional statistics, including skewness, kurtosis, the four smallest Jul 4, 2016 · The discussion is very helpful. Need some help on how to create a new variable that calculates automatically the sum of several variables put together. Only numeric, nonnegative, integer-valued variables are all SE/Cluster Oct 29, 2018 · Dear Statalist, Is it possible to get MEDIAN value in STATA. In other words, if the sum of variable B is 100, I want variable C to 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. tab2 produces all possible two-way tabulations of the variables specified in varlist. If you have a categorical variable that contains labeled integers (for example, 0 or 1, or 1 upwards), and you want a pie or bar chart I am trying to sum up say 100 variables across columns, but many of the 100 variables have missing values. S. 2 by varlist: The by varlist: prefix causes Stata to repeat a command for each subset of the data for which the values of the variables in varlist are equal. foreign is the main category under which each value of price Apr 4, 2020 · Hello everybody; I'am new in this forum. I have Information To generate descriptive statistics for your variables, you can use the summary command (or sum, for short). -rowtotal- does not work because it treats missing values as 0; even with the option -, missing-, it generates a missing value only when all the 100 variables are Jul 11, 2024 · Data Analysis with Stata Cleaning a Stock Portfolio Stata has two system variables that always exist as long as data is loaded, _n and _N. It works perfect. Jan 1, 2017 · Welcome to Statalist. In Stata we can state something as true like below: use the dummy variable without explicitly specifying the condition but with the variable name alone. com/tags/stata/info), and calculate for that example dataset the results variable manually that you want. 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. Jun 26, 2020 · I have a dataset, which has a (country_name) variable and a count of (requests) sent from that country to a company both variables are coded as long data. That gives a total over observations (rows) and if you want the total of that variable, or each of the components, the easiest commands are probably tabstat and table. com> wrote: > dear statalisters, > > Stata 8. Meanwhile, id is Sep 11, 2023 · Hi Stata Users, I am using Stata 17 on Windows and have some data that I would want to find a sum by group Example data (with the desired variables) is below Dec 17, 2014 · Yes, but i have much more variables, and I didn't want to do it by hand, select one by one. clist must refer to numeric variables exclusively. com> Prev by Date: RE: st: test the format isdate Next by Date: Re: st: need to sum several variables in a row Previous by thread: Re: st: need to sum several variables in a row Index (es): Description In this entry, we discuss how to use table to create a table of summary statistics. The var Jan 6, 2019 · Stata orders the data according to varlist1 and varlist2, but the stata_cmd only acts upon the values in varlist1. . It contains sums of aid in US dollars. I mean if the USA sends 100 times aid to Congo, there will be 100 rows with data for goal_2 Variables are assumed to be categorical; use the c. Now, I want to collect the sum of the values of the first 12 variables in another one called, say, "tot_2000" which should contain just one number (in the example was 18). Sep 27, 2022 · Include an example data set using dataex (see here stackoverflow. You can use ds to create a list of variable names. Two of them are time (Year, Month) variables and one location (Location) variable. First, we generate the strata and weight variables from our standard distribution, and then use mean to compute the rates. in a number of variables (columns). Any suggestions? Answer: The question shows that no matter how many general or special purpose tabulation commands Stata provides, it is always possible to think of a tabulation problem that Nov 16, 2022 · Calculating medians in statistical software such as Stata should be easy, and it usually is. Let's use Stata's generate command to create a new variable for height measured in meters. Statistics can be calculated (conditioned on) another variable. Description collapse converts the dataset in memory into a dataset of means, sums, medians, etc. Cheers, Steve -----Original Message----- From: [email protected] [mailto: [email protected]]On Behalf Of Harriet Baker Sent: Sunday, 15 April 2007 1:04 p. Therefore, any zero values will not appear in the chart, as they sum to zero and make no difference to the sum of any other values. Reconstructing your problem, which is not well explained, You have observations for individuals within households (identifier hhid) within 50 states of the USA and the District of Columbia (identifier stateID). Could someone please give me a solution, how to create a variable which sums across observations for a given date? Description tabstat displays summary statistics for a series of numeric variables in one table, possibly broken down on (conditioned by) another variable. 13. Could you, please, let me know how to obtain the scalar for the value of the column sum? I need the value I get using "egen sum (x)", but not the column of these values, but just a single number which stata would terat as a scalar. How could I just write inside the collapse: house`i' (instead of writing house1940, house1941, etc. Here is an example of syntax that I used: forvalues j=1/50 { Apr 10, 2015 · So I interpret what you wrote to mean that you have three variables: origin, destination, and price in your data set. Nov 16, 2022 · How can I create a dataset (matrix) of means (other stats) of variables from the current dataset? How can I easily generate the sum of a variable? I know this can be done with the sum function, but can you get the sum as part of the output of a Stata program that generates univariate statistics (e. if varA==1 varB==0 varC==1 I should have varD==2. replace where = "F" if Nov 16, 2022 · Observations are distinct on a variable list if they differ with respect to that variable list. Ryan's code can be telescoped to egen sum_var = sum (X), by (group) egen count_var = count (X), by (group) gen mean_X = (sum_var - X) / (count_var - 1) You could do without -egen Nov 16, 2022 · Zero frequencies are shown explicitly. factor-variable operator to override this. . 1 and I couldn't get the results I want. Most Stata commands allow the by prefix, which repeats the command for each group of observations for which the values of the variables in varlist are the same. However, as from Stata 10. For example if you have a long dataset that 13. It is used primarily for continuous variables (i. If you use the option not then ds will list all but the variable names you are mentioning. Variables in the dataset are columns of observations in your data. e. The var Description sort arranges the observations of the current data into ascending order based on the values of the variables in varlist. Without an understanding of your data, it is difficult to give more concrete advice. marginal income tax rate See Mitchell (2010) for numerous examples using egen. to get the statistics you want in one table Oskar Solbraekke Join Date: Mar 2017 Description summarize calculates and displays a variety of univariate summary statistics. _N denotes the total number of rows. Example 3: standardized means the four cities and two years combined. When you want a row median—a median within observations across several variables of the same kind—it appears trickier. The sets are getting somewhat large, is there a way to command stata to sum all variables in the data set instead of typing in each variable name? Aug 24, 2022 · I wasn't sure whether you wanted the sum by rows only, or whether you to take the summed rows and total the column. Options if/in/over variables in varlist . m. This variable is coded 1 if the student was female, and 0 otherwise. Putting in words, what I am trying to do make is a sum of a particular set of observations and storing each sum in a cell for a new variable. Thank you ! How to use the command "sum" to summarize variables in Stata Description The correlate command displays the correlation matrix or covariance matrix for a group of vari-ables. There is no limit to the number of variables in varlist. Nick [email protected] Leonor Saravia I m trying to sum many variables by row using the -rowtotal - function. Remarks and examples Stata scalar variables are different from variables in the dataset. by without the sort option requires that the data be sorted by varlist; see [D] sort. Using contract destroys the existing dataset, however, and therefore will Jul 28, 2020 · I'm trying to sum the values across multiple columns (variables) for each row and store the summed values as a new column. dk> Prev by Date: re: st: summarizing by more than one grouping variable Next by Date: Re: st: wilcoxons rank sum in data set with three groups Previous by thread: st: summarizing by more than one grouping variable Next by thread: re: st: summarizing by more than one grouping variable The first digits indicate a diagnosis. When you sort on a string variable, however, null strings are placed Description tabulate, summarize() produces one- and two-way tables (breakdowns) of means and standard deviations. Aug 23, 2014 · 1 I'm having some problems with a loop that I'm trying to perform and probably with the syntax for generating the variable that I want. Then when you ask for the sum of those values in the same groups of observations, you get the group sums of one 1 and any number of 0s, and each sum is thus necessarily 1. I want index to sum the value of the 6 variables only when 1 or 0, never when 9 so that the range of index remains between 0 and 6. The number of observations (rows) in each group ranges from 3 to 20. gen where = "D" if foreign="domestic":origin (3 missing values generated) . Once that works you can probably just make all of this in one line. See [R] tabulate oneway and [R] tabulate twoway for one- and two-way frequency tables. No statistical background per se, but a social researcher. When prefixed with by varlist:, the result of the command will be the same as if you had formed separate datasets for each group of observations, saved them, and then gave the command on each dataset separately. It also provides a little example of various parts of Stata in play. First, be aware that codebook reports their number, albeit as “unique values”. -rowtotal- does not work because it treats missing values as 0; even with the option -, missing-, it generates a missing value only when all the 100 variables are Jul 13, 2016 · Summary Statistics for One Quantitative Variable over One Categorical Variable If you start with a tab command and then add the sum () option, with the name of a continuous variable in the parentheses, Stata will add summary statistics for that variable to each cell of the table: tab class, sum (edu) Gives: SUBJECTIVE | I am trying to sum up say 100 variables across columns, but many of the 100 variables have missing values. Stata for Unix(console) users can instead use the set linesize command to take advantage of this feature. Get to know Stata’s collapse command Jun 1, 2017 · I have used SPSS in the past, and new to STATA . raffaele@gmail. The rawsum function, however, ignores the weights and sums only the specified variable, with one exception: observations with zero weight will not be included in the s I'm trying to generate different 'total count' variables by companyid & year. First, we generate the strata and weight variables from our standard distribution, Our rate is really the mean of a variable that indicates whether a sampled individual has high blood pressure. 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. what i wanted is quite simple - simply to sum (total summarize calculates and displays a variety of univariate summary statistics. This is a handy way to make sure that your ordering involves multiple variables, but Stata will only perform the command on the first set of 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. References: st: collapse with multiple sets of weights From: "Dimitriy V. but then I get the sum of all values (across vars) per observation which is not what I want. Stata has two built-in variables called _n and _N. How can I do that? Aug 3, 2015 · Stata sum by group Asked 10 years, 3 months ago Modified 10 years, 3 months ago Viewed 26k times Jul 3, 2016 · hi guys, how can i sum a row of data (stock price) on stata? I tried to looked up with help functions and some youtube video but couldn't find any helpful resources. We simply divide height by 100 to 11. mean of others = (sum of all - this value) / (number of values - 1) It needs a little care given the possibility of missing values, but the -egen- functions do that for you. Adapting a Michael Blasnik dodge, we fill in all gaps and sum over (at most) the last 365 days: bysort id (date) : gen diff = date [_n+1] - date local N = _N expand diff gen byte original = _n <= `N' replace vol = 0 if !original bysort id date : replace date = date + _n + 1 by id : gen X = sum (vol) by id : replace X = X - max (0, X [_n-365]) keep if original drop original diff Notes: 1. , v1_log), use: gen v1_log = log(v1) Jul 19, 2016 · I have a dataset with grouped by a particular variable. list make foreign . Edit: easiest way is to generate the variable and then use replace commands for each if condition. Cox, SSC as part of tab_chi; Stata 7) Tabulates two or more comparable variables, in a combined two-way table of variables by values. b < · · · < . One that includes the count of all the 0 and one that has the Feb 12, 2017 · I would prefer a one variable solution, due to the high number of dates in the sample. And I want the sum to be missing if any of the 100 variables is missing. com> Prev by Date: st: order of arguments Next by Date: Re: st: Suggestion - Citing references from Stata Journal Previous by thread: Re: st: collapse with multiple sets of weights Next by thread: st Jul 13, 2016 · Summary Statistics for One Quantitative Variable over One Categorical Variable If you start with a tab command and then add the sum () option, with the name of a continuous variable in the parentheses, Stata will add summary statistics for that variable to each cell of the table: tab class, sum (edu) Gives: SUBJECTIVE | In Stata, pie and bar charts are drawn using the sum of the variables specified. _n basically indexes observations (rows): _n = 1 is the first row, _n = 2 is the second, and so on. We can sum up variable (e. water <barleywater@hotmail. 1, they now have a new missing option. 1. The Stata function gives you the following statistics: Jun 15, 2015 · 15 Jun 2015, 19:55 your data setup is completely unclear; let me guess, however, that height and weight are two (or more) different variables; use egen with the group function to make them into one variable and then use tab (as in #2) or tabstat or table, etc. In Stata you can create new variables with generate and you can modify the values of an existing variable with replace and with recode. 4 System variables ( variables) ted and updated by Stata. I don't know if its completely necessary or not, but our professor has advised us to use the sum command and take a look at a summary of all the variables when first opening a data set. For instance, Martin Weiss < [email protected] > : Should be -order- order rather than -sort- order, right? One can also accumulate a varlist as a local v and then egen x=rowtotal Example 3: standardized means and two years combined. The aid is the variable goal_2. Is there a simple way of computing the sum across variables (for each observation) ONLY for those variables with values greater than 1 (or, alternatively, the number of variables with values greater than 1 per observation)? * * For searches and help try: Ryan's solution is naturally correct. 12 4 2 1700 2. To recapitulate basics: if you Oct 24, 2016 · Thank you so much for your help. No The sum (and sum of weights) is not explicit in the output from summarize, but it is calculated on the side and put in r-class results. The data must already Oct 9, 2020 · However, Des (new variable) is a categorical variable so I went on to create a Dummy variable (with multiple indicators) DumDes to allow me sum or total across columns excluding certain indicators in DumDes (another New variable). ratio/interval) but could also be used for some ordinal variables that are approximately continuous (e. The rows with aid for goal_2 are not summed per donor. Best, Alan On 1/24/06, b. Like this: * Example generated by -dataex-. This command doesn't work. May I know how can I get it. Aug 14, 2024 · This tutorial provides instructions on exploring the basic features of data and conducting preliminary analysis using Stata. a < . I would like to generate variable C as the sum of variable B. First, we generate the strata and weight variables from our standard distribution, and then use me References: st: summarizing by more than one grouping variable From: Lars Folkestad <lfolkestad@health. Masterov" <dvmaster@gmail. Mar 15, 2018 · But if you had a Stata internal format monthly variable for the year and month of birth, then you would just -collapse- with that one variable in the -by ()- option. 2 Window XP Pro SP2, > > i have a variable 'total', which represents population (no. Either all variables should be numeric, or all variables should be string. If no varlist is specified, summary statistics are calculated for all the variables in the dataset. Feb 18, 2016 · Since this relates to my issue, I am posting it here. merryman@gmail. I mean if the USA sends 100 times aid to Congo, there will be 100 rows with data for goal_2 The pop variable in example 1 represents the total population of the state. 5 Accessing coefficients and standard errors below f 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. You have a variable numper, the number of persons per household, and you want the average per When you call up the tag() function of the egen command, you assign the value 1 to just one of any number of observations with the same distinct values for the specified variables, and 0 to all the others. You don't say whether you want to maintain the separate multiple observations, or reduce it to one observation per Learn how to effectively `calculate the sum of variables` in Stata for annual data using simple commands and commands in Mata. i have asked interviewees which month of the year they worked in the field - so, in Stata; for each month ( january to December), i have a variable - and 0 for not Apr 28, 2020 · I want to generate a variable that is the sum of "trade-share of GDP" in a given year for a given country. My original post related to calculating the sum product of var3, but I need to do this for different values of each variable and then perform a summation for each time period. table rep78, by (foreign) contents (n weight mean weight sd weight p50 weight) reports the mean and the 50th percentile of car weight by repair record rep78 and foreign/domestic car types. g Year) tabstat Allocation_Total, s (n sum) by ( Year2019) If we want to sum up yet by another variable e. This portfolio contains 32 Creating summary tables using the sumtable command Lauren Scott and Chris Rogers University of Bristol Clinical Trials and Evaluation Unit Jun 15, 2017 · If I understand correctly, for each combination of ID and Condition, you want to calculate a running sum, ordered by Rank, of the variable Value, excluding the current observation. com Remarks are presented under the following headings: Summary statistics Generating patterns Marking differences among variables Ranks Standardized variables Row functions Categorical and integer variables String variables U. I'm new to stata - this might not be the most elegant but I think it works: Makes variable row_sums that sums all the rows from the variables listed: Code: egen row_sums=rowtotal(GP_E7_C24 GP_E8_C29 GP_E9_C36 GP_E10_C42) Stata is smart. If I use the code: collapse (sum) requests, by (country_name) the results are wrong. Sep 11, 2022 · Each single variable contains the values in the way I showed in the question. Oct 8, 2015 · Stata: Generate sum / total by specific date ranges and save them as a new variable Asked 10 years, 1 month ago Modified 10 years, 1 month ago Viewed 14k times 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. You can use the sort command in Stata to acheive this. To: [email protected] Subject: st: Collapse (sum) observations by two variables Sep 9, 2016 · But a Stata data set is not a spreadsheet, and your Excel-driven instincts are almost never helpful, and often get badly in the way. -egen, sum ()- was cloned as -egen, total ()- in Stata 9 for precisely the reason you identify. and also wondering if there is a way to give an equal weighting for each data (to create an equal weighted portfolio) Cheers, Chris Mar 18, 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. One 'total count' for subs, and one total count for loans. Our rate is really the mean of a variable that indicates whether a sam led individual has high blood pressure. < . Jun 14, 2013 · Your problem does not even call for sum() with if, so it is best to start at the beginning. Another approach is using the merge command to add the variables you generate with the collapse back to the original dataset. Computing new variables using generate and replace Let’s use the auto data for our examples. Is there a simple way of computing the sum across variables (for each observation) ONLY for those variables with values greater than 1 (or, alternatively, the number of variables with values greater than 1 per observation)? * * For searches and help try: The code below opens an example dataset and uses summarize (abbreviated sum) to generate descriptive statistics for the variable read. To help break the tendency to apply Excel habits in Stata it is helpful to not use Excel-based vocabulary when talking about Stata. The functions are specifically written for egen, as documented below or as written by users. ---This video is based on the q e sum would calculate weighted sums (with a normalized weight). N contains the total number of observations in the dataset or the number of observations in the current by() group. My question is how to summarize the values of the (requests) variable for each (country). reporter_iso and partner_iso are string variables. dta format) of all aid donors (the numeric variable donors1) to the Democratic Republic of Congo (variable recipient) for two years, 2012 and 2013. )? Description Most Stata commands allow the by prefix, which repeats the command for each group of observations for which the values of the variables in varlist are the same. Apr 28, 2014 · The variables that I'm collapsing are like house1940, house1941 (with a previous forval house`i'). This problem is worth some discussion, not just because it arises in practice. The code below opens an example dataset and uses summarize (abbreviated sum) to generate descriptive statistics for the variable read. tabstat allows substantial flexibility in terms of the statistics presented and the format of the table. and also wondering if there is a way to give an equal weighting for each data (to create an equal weighted portfolio) Cheers, Chris The by option for collapse can take more than one variable so all you need to do is: collapse (sum) amount, by (area candid) to get what you are looking for. Aug 21, 2023 · I want to create an new variable (index) being the sum of 6 variables : chom_i nodip_i surocc_i fmonop_i imm_i pauv_i These variables refer to binary concepts and are coded as such : 1 = yes; 2 = no; 9 = missing data. tabstat displays summary statistics for a series of numeric variables in one table. tabm (Nicholas J. See [U] 13. sdu. table is better, but tabulate, summarize() is faster Creating and recoding variables | Stata Learning Modules This module shows how to create and recode variables. I have used gen C=sum (B) but that is giving me running cumulative results. Summary statistics are a way to explore your dataset, find patterns, and maybe even refine your question of interest. They will, however, be mentioned in the key. Description tabulate, summarize() produces one- and two-way tables (breakdowns) of means and standard deviations. I have a followup question. In the second example, we get the descriptive statistics for a continuous variable called write, which Menu Statistics > Summaries, tables, and tests > Summary and descriptive statistics > Summary statistics Description summarize calculates and displays a variety of univariate summary statistics. Stata scalars are named entities that store single numbers or strings, which may include missing values. I want to generate new variables for the diagnoses that equal to the sum of the variables that relate to this diagnosis. g allocation_total), by another variable (e. They are called variables because their names all begin with the und The variables are n contains the number of the current observation. In the future, show data examples when you want help with code, and use the -dataex- command to do so. If varlist is not specified, the matrix is displayed for all variables in the dataset. In this guide, we will explore how to sum a defined set of variables in Stata to get totals for different years, as outlined in a typical scenario with 48 variables categorized by periods. sum price display "Sum="r (sum) return list will show you the saved results. Hi All, I am looking at collapsed data and I have variable A that is a string, and variable B that is numeric. Missing numeric values are interpreted as being larger than any other number, so they are placed last with . For more info, type help dataex clear input str8 date byte number_of Description estat summarize summarizes the variables used by the command and automatically restricts the sample to the estimation sample; it also summarizes the weight variable and cluster structure, if specified. Then just sum up that variable. Of course you can order your observation based on ordering one variable, but you can go further and sort your data on multiple variables. qzz utpwrg zvqq ttaf reruj futuc idwhzf pxgzb npj axilye xfxnp fpe gjet puka woph