Stata tabulate number of unique values

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August undefined, 2024

WebTo add the duplicate observations, we sort the data by id, then duplicate the first five observations (id = 1 to 5). This leads to 195 unique and 5 duplicated observations in the dataset. For subject id =1, all of her values are duplicated except for her math score; one duplicate score is set to 84. WebWe will illustrate this using an example showing how you can collapse data across kids to make family level data. Here is a file containing information about the kids in three families. There is one record per kid. Birth is the order of birth (i.e., 1 is first), age wt and sex are the child’s age, weight and sex.

How can I detect duplicate observations? Stata FAQ

WebNov 16, 2024 · Thus, if values of a variable are 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, and 5, then in one sense of “unique”, there are five distinct or unique values—namely, 1, 2, 3, 4, and … StataCorp recommends a strong password of at least 8 characters including 1 … Explore resources on Stata and statistics. This website uses cookies to provide you … WebFeb 7, 2024 · To confirm that the observations are uniquely identified by year, type duplicates report year This returns the output below, which tells us that 18 observations (rows) in the data have unique year values, and that there isn't a year value that repeats. Conclusion: in gsshappy.dta, the variable year uniquely identifies each observation. layer cake director

Count unique values in Stata - Stack Overflow

WebThe sysuse command loads a specified Stata-format dataset that was shipped with Stata. Here we will use the auto data file. sysuse auto . The describe command shows you basic information about a Stata data file. As you can see, it tells us the number of observations in the file, the number of variables, the names of the variables, and more ... Web2 Answers Sorted by: 5 To some it might seem silly, or at least puzzling, that people want tables with more than 12000 rows, as there must be a better way to display results or answer the question that is in mind. That said, the limits of tabulate are hard-wired. But you just need to think of reproducing whatever you want to show. WebIn this case what you are looking for is what gets stored in r (r) after you use tabulate. Just a note, if you have missing data and use the option ,missing in tabulate, that counts as one in r (r). So if you want to save that to a macro you can do this: tab sample if variable==3 local unique_values = r (r) di "`unique_values'" Elektor • 6 yr. ago katherine facebook profiles

How can I see the number of missing values and patterns of …

How to Use tabulate() Function in R to Count Integer Occurrences

WebThe use of if is not limited to the tabulate command. Here, we use it with the list command. list if rep78 >= 4 make price mpg rep78 foreign 3. AMC Spirit 3799 22 . 0 5. Buick Electra 7827 15 4 0 7. Buick Opel 4453 26 . 0 15. Chev. Impala 5705 16 4 0 20. Dodge Colt 3984 30 5 0 24. Ford Fiesta 4389 28 4 0 29. Merc. Bobcat 3829 22 4 0 30. Merc. WebGo to Module 14: Missing Data, and scroll down to Stata Datasets and Do-files Click “14.2.dta” to open the dataset P14.2.1 Investigating quantity and patterns of missingness We begin by investigating how many missing values there are in the variables included in the dataset, using Stata’s misstable summarize command: katherine faheyWebNov 29, 2024 · #1 Count distinct values by groups 29 Nov 2024, 15:34 Hello everyone, I have one question related to counting distinct values by groups. Here is an example of the data … katherine faricy anderson

"WebMay 18, 2013 · Here, we want to know the number of unique values of the variable year. Stata Code: . clear. . sysuse uslifeexp.dta. . quietly tab year. . display r (r) The prefix quietly … " - Stata tabulate number of unique values

Stata tabulate number of unique values

counting the number of categories of a given variable - Statalist

WebStata treats a missing value as positive infinity, the highest number possible. So, when we said list if rep78 >= 4, Stata included the observations where rep78 was ‘ . ' as well. If we … WebFeb 13, 2015 · #1 Table showing list of unique string variables, within categories of a numeric variable 12 Feb 2015, 22:27 Hello, I have a numeric variable A with values 1-247. For each value of A, I have a string variable B with values "Mercury, Taurus, Impala, and Gremlin". For each A, there may be multiple records of B, and some will repeat.

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WebJul 13, 2016 · All of these tasks can be carried out using just two Stata commands: tabulate (or tab) and summarize (or sum). Getting them to do all these things is simply a matter of … WebMay 25, 2024 · If you want to count distinct IDs, as I guess you do, count () is irrelevant, as it counts non-missing values regardless of how many distinct values that means. Here is a demonstration. The data are 666 values of 42, but count () returns 666, not 1. Code:

WebThe four methods of transforming numeric to categorical variables that we have come across so far: generate var, replace recode var, generate () generate var, autocode () egen var = cut () Back to top Extracting substrings ends () WebJun 18, 2024 · Stata Abstract The command unique without a by reports the number of unique values for the varlist. With a by it does the same, but also creates a new variable (_Unique by default but can be named in the gen option). This new variable contains the number of unique values of the varlist for each level of the by variable.

WebDec 14, 2024 · The tabulate() function in R can be used to count the occurrences of integer values in a vector.. This function uses the following basic syntax: tabulate(bin, nbins=max(1, bin, na.rm=TRUE)) where: bin: Name of the vector; nbins: The number of bins to be used; The following examples show how to use this function in practice. WebHowever, Stata (like most statistical software) cannot handle string variables. 5 A much better way to store this data would be to assign each state a numerical value, say MI = 1, OH = 2, FL = 3, etc, then keep a data dictionary linking the values to the labels they represent.

WebNov 8, 2024 · 1. 2. 1. There are many more cID in the data, from using codebook group 2 has 33 distinct cID values in my actual data, but I would prefer to have a convenient way to …

WebThe ﬁrst Stata lesson here is a reminder of the value of by:. One basic tutorial was given in an earlier column (Cox 2002a). Alternatively, check out entries on by: indexed in the Stata manual. by: is the basic tool for calculations by panels or other groups. Those commands that appear to sidestep it will almost always use it internally. katherine fackler chapman mdWebEven through the table is not well labeled, recode()’s coding scheme provides us with clues as to the table’s meaning. The ﬁrst line of the table corresponds to 50 miles per hour and … layercakeelements.comWebQuite fortunately, there are no missing values in this variable! Clearly tabulate is relevant only for categorical variables or continuous variables that have few unique values. For example, it would not make sense to run tabulate total_covaxin; in fact, Stata will tell you that the variable has “too many values”.. What we have discussed so far is oneway tabulation, i.e., … layer cake dressWebCount unique values in Stata. codebook is a great command in Stata. It describes data contents but also simply identifies unique values. Number of unique values of mpg is 21. … layer cake dragon ball layer cake dual audio downloadWebStata offers a variety of ways to tabulate data. The most basic table, table [variable] , will show the variable and the frequencies of each category, like so. This can also be done with more than one categorical variable, table … layer cake distributionWebIt also takes account of any if or in qualifiers and any zero weights. It's also true, as @Noobie explains, that omitting missing values from a tabulation is default for tabulate in any case. So, to get the result you want you'd need to modify your … katherine family medical clinic