Converting date of birth to age in stata. Upvoting indicates when questions and answers are useful.
Converting date of birth to age in stata We first stset the data: failure codes for CHD are specified; origin is set to date of birth, making age the analysis time; and the scale is set to 365. Then count how many people are between 20-29, 30-39 and so on based on gender. stata. Format age %2. Thank you very much in advance! An accurate age without any rounding or truncating is strongly recommended; ideally it should be derived from date of birth (DOB) and date of measurement (DOM), i. In this entry, we discuss how to convert date and time values that you have imported from other packages to Stata dates. e. Jul 14, 2023 · The obstacle here is that Month variable which is pretty useless. You'll need to make the necessary changes in order to accommodate your date-of-birth variable's datatype and date format. Assigning Stata's daily date display format with the format command is Stata's sense of the word (sense 2), but is not sufficient. I have the date of the birth (date_birth) as well as the year variable (that indicates the year of the observation). Pandas get the age from a date (example: date of birth) Asked 11 years ago Modified 3 years, 2 months ago Viewed 101k times Jun 3, 2014 · I have a need to store dates as strings and can't seem to find an easy way to do this. Whether it’s for official forms, job applications, or personal records, this tool gives you the exact number of years, months, and days. Assuming that was 2017, then you would get the age with: gen age = 2017 - year (dofc (birthdate)) The relevant helpfile is: help datetime Stata 40 - Find the Correlation of Two or More Variables create dummy variables using stata with gen command and tabulate gen command Jul 15, 2025 · As a database developer, I’ve often been asked to retrieve age information from birth dates stored in SQL Server. Across professional fields, including human resources, academic research, and detailed demographic analysis, the ability to accurately and efficiently calculate age using Excel functions is paramount. I was trying to do (year - data_birth)/365. So i should come out with a report like this Apr 1, 2024 · Reading Time: 7 minutes One interesting task you may be given as a data professional is to calculate a person’s age based on their date of birth. Sep 26, 2017 · Casibom giriş işlemleri için resmi giriş bağlantısını ve güncel giriş adımlarını tek yerde toplayan güvenli ve hızlı erişim rehberi. ca> Re: st: generate age variable from year and month of birth and date of the survey From: Maarten Buis <maartenlbuis@gmail. I want to get 27 since… Sep 28, 2020 · As a researcher, I get data with various data formatting- And it was always annoying to convert the dates because I would often forget the codes- So here I share the codes to convert various string dates to STATA format dates. Sep 10, 2020 · This page lists commands you may find useful when working with date variables in STATA. Day & month are missing, so these five variables will only have the year. "yyyy-mm-dd" as a pattern or style for holding dates is a format (sense 1). Nov 3, 2025 · Written and illustrated tutorials for the statistical software SPSS. Excel provides robust Feb 4, 2005 · Converting Date of Birth to Age Can anyone please help me? is there a function in excel to convert Date of Birth data into Age? or a forumula to help? Many thanks Wendy Register To Reply 02-03-2005, 10:06 AM #2 WendyMc Oct 20, 2020 · Hello, I read the Stata documentation on date and still have a question of conversion. It's a 6 digit number that a human eye, with some effort, can understand as a date, but is not an actual Stata date variable. In view of Eric Melse's generous recommendation, it seems ungracious to point out that -- perhaps through over-exposure to certain other software -- his last few statements need rewriting because the if command and the if qualifier are only rarely equivalent. Theoriginalvaluesareusually beststoredinstringvariables. Description This entry describes functions that calculate durations, such as the number of years between two dates (for example, a person’s age). It discusses functions used to obtain Stata dates, including string-to-numeric conversions and conversions among different types of dates and times. Convert DD/MM/YYYY: gen numeric_date=date (string_date, “DMY”) Introduction Are you looking to convert date of birth to age in Excel for your data analysis and reporting needs? Understanding how to manipulate date values and calculate age from date of birth is an essential skill for anyone working with Excel spreadsheets. Elapsed dates are calculated as the number of days from January 1, 1960. See how to make your own age calculator in Excel. Re: st: how does one automatically calculate the age in years by subtracting the system date from the date of birth? Apr 21, 2020 · Hello, It's first time I am using this forum. I'm trying to calculate the age of a user based on the current year and his year of birth, but something in my syntax appears to be incorrect and I can't spot it. May 18, 2023 · This tutorial explains how to calculate age in Excel using a date in a dd/mm/yyyy format, including several examples. The variable "month" is a byte and the variable "year" is an int. I have previously converted successfully date of birth (dob) to age; most of the time the dob was string. Our age calculator online by date of birth is free and requires no login, ideal for birthdays and events. If you want the fractional Stata provides functions to convert dates into elapsed dates, formats to print elapsed dates in understandable forms, and other functions to manipulate elapsed dates. Jul 16, 2021 · That is, is birthyear a string variable or a numeric variable with daily date display format? In addition to the built-in date types above, such as %tc and %td, Stata provides a type you can define, denoted as %tb and called business dates and calendars. 1 introduced dedicated age-related functions. These functions return the rounded down integer of the difference. com> Prev by Date: Re: st: Dropping variables in USE statement Next by Date: Re: st: Dialog box for opening a file Previous by thread: Re Datetime functions, in both Stata and Mata, accurately and conveniently handle datetimes for (1) calculating durations, such as age and other datetime differences; (2) finding relative dates, such as the next birthday after a given date; and (3) extracting components of Stata datetime values and variables. My code is: gen birthday = date (pt_dob, "mdy"). A good description is available in the Guide to DHS Statistics (Rutstein and Rojas 2003). Note that display date ("1/1/1961","MDY") returns 366 because 1960 was a leap year. Choose the New Script option from the Scripting Tools block. About Age Calculator How to Use This Age Calculator? Simply enter your birthdate and click the calculate button. com> Prev by Date: Re: st: pca and predict--confusion about what it does Next by Date: Re: st: computing elasticities after using lpoly Previous by thread: Re: st: how to get age in number of years, months and days Next by thread: Re: st: how to get age in number of years, months and days Index (es): Description These functions convert dates and times recorded as strings to Stata dates. Calculating Age from DOB in Excel Age is a very important factor when it comes to dealing with data. Your age will be shown on the calculator in years, months, weeks, and days. Stata dates are numbers that can be formatted so that they look like the dates you are familiar with. If you have, it's time for a refresher. Dates and times in Stata are integers with specified units. The example below creates a date variable called birthday from the character variable bday. I read about the command "date" can convert string date variable into a numeric one that is recognized by STATA. more Sep 7, 2016 · Hi, Stata users! I want to convert data time into years, in order to determine age. What has changed in the questionnaire? For most of DHS history, the DHS woman’s questionnaire collected month and year of birth of the respondent and her age, month and year of marriage or age at marriage, and month and year of birth of each of her children as well as the age of living children. Apr 14, 2021 · Stata 16. This function can be used to Sep 2, 2025 · Learn to calculate age in years, months, and days from a date of birth in Excel. These functions account for leap years and leap days and produce results that are more consistent than simply taking arithmetic differences of numerical dates and converting to another unit. Simple steps for precise age calculation with formulas and tools. ac. daily to monthly date variable), and some other related commands. Then, a Stata (td) date is a number of days (since 1960-01-01), and a week is seven days. You can generate a date version of bday using the date () function. But, don't know why, I simply couldn't paste those data to stata under child-age column directly. the age in integer years on for date of birth nonleap-year birthday for 29feb birthdates Aug 24, 2019 · In Stata, I need to calculate the age of a patient at the last check-up by using the date of birth and the check-up date. I have not been able to find an answer to my question, but apologies if this has already been covered. Nov 20, 2019 · Pratibha Singh, please note that if you are running Stata 17, you can use functions clockdiff () and datediff () to find differences between times and dates, respectively, in various applicable time units: years, months, days, hours, etc. But worry not; it’s more straightforward than you might think. 1 Overview A complete overview of Stata’s date and time capabilities can be found in [D] Datetime. Ideally, the "age at death" variable will Jan 16, 2024 · Column B displays the age for each birth date in column A in terms of decimal years. Our age () function is a special case of datediff () in years. 2013, respectively. " I have four variables: birth month (float), birth year (float), death month (byte), death year (integer). txt file, with values representing those used by another software Convert the numeric date/datetime to a numeric variable corresponding to Stata’s base date (C) Format the numeric variable (B) Jun 26, 2019 · If I understand correctly your question, you have the number of weeks between pregnancy and birth, you have the date of birth, and you want the date of pregnancy (keeping in ming the gestational age is usually an estimate). If (horrors) your daily dates are integers like 1011975 and 22062022 then you need to convert to Stata daily dates to use age(). On this page, you can calculate date and year of birth given a age number. DAYS (formdate-birthdate)/365. 25 = 11. csv or . ). And with a little help from ChatGPT, it’s like having a friendly assistant by your side, ready to ease the process. However, it returns as the new variable with all An online age calculator computes your exact age in years, months, and days from your date of birth. generate daten = date(dob, "MDY") (2 missing values We added a set of datetime functions, in both Stata and Mata, to accurately and conveniently handle datetimes for (1) calculating durations, such as age and other datetime differences; (2) finding relative dates, such as the next birthday after a given date; and (3) extracting components of Stata datetime values and variables. Mar 20, 2023 · Learn a few easy ways to calculate age in Excel: how to get age from date of birth, age between two dates, exact age in years, months, days, and more. You can tell if you have such dates quite easily as for recent dates their mean from e. This could be today’s date or any other reference date. Nov 15, 2020 · Hi, I know that many questions have been posted about working with dates in Stata. and was hoping to copy the age data I have "0 years, 7 months,23 days" from my given Excel file. Example 3: Convert Date of Birth to Age in Years, Months, Days To convert the date of birth to an age in years, months and days for cell A2, we can type the following formula into cell B2: Hi, If I have a variable for birth date in the form of 19940320 how can I create a variable for age in years only? So e. We'll cover everything from the most reliable functions to Mar 16, 2020 · Hi All I'm creating a set of 5 date variables to calculate age of my study participants. Age is generally expressed in years, months, and days, depending on the precision required. I have a variable with the birth years of the respondents, which I would like to recode into an age variable. g. One method is to use the DATEDIF function, which calculates the difference between two dates in years, months, or days. The data only has the date of the start of credit. The formula uses the DATEDIF function which takes a start date and an end date and calculates the difference between the two. Description Most software packages store dates and times numerically as durations from some base date in spec-ified units, but they differ on the base date and the units. Within these functions you will need to specify how the date-time information is formatted in the string. m. Jul 6, 2013 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Age calculator simplify this Apr 21, 2019 · Hey everyone, I'm a student who needs help with this particular problem. Age calculation is a method to determine how long someone has lived from their date of birth to a specific date. But, it will be easier if I can just convert dob "2016-12001" to age in months straight away in stata. Jan 31, 2022 · Hi, I am trying to make a new variable called "date" using the month and year in my dataset. From: Nick Cox <njcoxstata@gmail. By adjusting the "Age as on" date, you can choose to compute age on a different date in the past or the future. Then it's just a matter of applying Stata's -age ()- function. I have now a dob variable which is of the type "numeric daily date (int)", and the format is as follows 5/15/2009 (for May 15, 2009), 6/8/82 (for June 8, 1982), etc. Following link Description This entry provides a complete overview of Stata’s date and time values. Accurate, quick, and easy to use - try it out today! Jun 23, 2024 · In this article, you will find ways to calculate age in years and months in Excel using DATEDIF, TODAY, DATE, YEARRAC, YEAR, MONTH functions. I have tried to convert this dob to stata date (in string format) before We might guess that the variable name dob stands for date of birth. The help file has everything on dates Jan 21, 2022 · Dear all, I am trying to generate a date of birth using century month code (CMC) format. If you have such dates, then the conversion is something like this. Mar 23, 2015 · Calculate age from date of birth and test-date 23 Mar 2015, 09:12 Dear all, As I am proceeding through my databases, I figured I want to know at which age a patient has gotten a certain scan and also, how old the patient was when they draw blood from him/her. CREATE TABLE Normal_Users( first The tutorial shows different ways to get age from birthday in Excel. Excel doesn’t offer any built-in functions to calculate age from a number. In this post, I will provide a brief tour of working with dates that will help you get started using all of Stata’s tools. DOM-DOB. For this example of how to calculate age from DOB in Excel, we’ll be using the worksheet below: Jan 31, 2017 · This video demonstrates how to create a date variable from a string in Stata using the *date ()* function. For example, '20150701' to '2015m7'. Simply change 365 to 365. I would like to create a variable reflecting "age at death. Jun 19, 2023 · Stata has recently added many functions to do with date differences (including age and birthday problems) and if you are using Stata 18 (which is assumed unless you state otherwise) they are accessible to you. Learn quick, accurate methods to streamline your data analysis today. 25. Steps: Select the cell where you want to calculate age. https://www. comCopyright 2011-2019 StataCorp Jun 10, 2021 · Is there a standard list of Stata commands or a downloadable program for converting the string variable of a participant's 10-digit CPR (civil registration number) into a usable 6-digit "DMY" date of birth, and a 4-digit "DM" birthday. Mar 30, 2015 · I now realized that if we want STATA to deal with time we have to convert the string variable representing date into "STATA internal form" (count of seconds, days, months or years from 1960) first and then if necessary, change the format of "human readable form" (%td, %tm, etc. For example, if the interview date was 13 Sept 2011 and a birthdate is 06 Jan 2000 such that and Age = (date1 - date2) / 365. e 1960 and I would like to convert the year of birth variable into age. 68515 = 8. 213or1:42p. What's reputation and how do I get it? Instead, you can save this post to reference later. I am unsure on how to convert the string to an integer for subtraction and not sure on how to correctly write the dates (or how to change all the dates to References: st: generate age variable from year and month of birth and date of the survey From: "Blais, Martin" <blais. mdy () takes three numeric arguments — month, day, year — and returns the corresponding elapsed date. See [D] Datetime for an introduction to Stata’s date and time features. Nick n. We can convert string dates to date data using Stata's date () function along with the generate command . Accurate age calculation is especially important in areas like healthcare, education, and legal systems. * Calculate with dates drop tomorrow* gen tomorrow = date +1 // dates are numeric --> normal calculation possible gen yesterday = date -1 format tomorrow yesterday %td // remember to format date variables help datetime durations // special date functions for durations gen birth = date ("20. We could calculate each person's age as of a particular date, but we can't because the dates are stored as strings. and compile it under one new variable called agegrp. I would like to make it into the format <year>m<month> and call this variable date. However, in some cases, the time value may seem to be behind in Stata. I have Stata date variables but now the dates (at the precision of a month) need to be taken to another program in the form YYYYMM (year and month). Easily calculate a child’s age in years and months with this free chronological age calculator. An example of my data is year yearborn 2000 196010 Any help would be appreciated. Date or time inputs often need translation to Stata dates or times. 22) Follow-Ups: st: RE: Calculate Age in years and months between 2 dates From: Nick Cox <n. more Apr 19, 2017 · I want to create a variable with the age of credit. Another method is to use the YEARFRAC function, which calculates the number of years between two dates including fractions of a year. Youbeginwiththedatetimevariablesinyourdatahowevertheyarerecorded,suchas21nov2006 or11/21/2006orNovember21,2006,or13:42:02. For dates stored as strings, the date () function does the conversion flawlessly. You Working with dates is important skill in Stata, in this video we look into date fuction, year, month, day, mdy, wofd, mofd and qofd functions. This free age calculator computes age in terms of years, months, weeks, days, hours, minutes, and seconds, given a date of birth. martin@uqam. But, I do not totally understand about if and trunc functions in Brought into Stata from a . The first 6 digits in ID Numbers represent the date of birth in the format yy-mm-dd. I'm unsure of how to convert these two variables Jan 11, 2023 · This tutorial explains how to convert date of birth to age in Excel, including several examples. j. Using Office Scripts to calculate age in Excel Find below an Office Scripts code to calculate age in years, months, and days from date of birth and as of date: Click the Automate tab on your Excel desktop or web app. We would like to show you a description here but the site won’t allow us. Two commands, date and format, are used to convert a string date into a numeric date. Whether you are working with demographic data or need to calculate the birth date of individuals for personalized marketing campaigns, this tutorial will guide you thro Abstract. How do I make Aug 25, 2025 · Learn how to calculate age from date of birth in Google Sheets using DATEDIF, YEARFRAC, and methods for years, months, and days. Feb 12, 2025 · Have you ever stared at a spreadsheet full of dates of birth and wondered how to transform those into ages without counting on your fingers? You’re not alone. Feb 12, 2025 · Calculating age from a date of birth in Excel might seem like a daunting task at first, especially if you’re not familiar with the various functions and formulas. Since bday is a string variable, you cannot do any kind of date computations with it until you make a date variable from it. Jul 6, 2015 · The word "format" is treacherous here. uk Kanter, Rebecca I am trying to calculate age in years and months betweeen an interview date (date1) and a birthdate (date2). Convert Date of Birth To Age in Easy way Using Excel #exceltutorialforbeginners #shortsvideo #excel Nov 5, 2018 · Hello! Each row of my dataset represents a family, and within the family I have each family member's age listed under the variables age1 - age14. I want to calcuate age (which is a numeric variable) based on pt_dob variable. I have found helpful answers when the year of birth also includes month and dates, however, when you only have year of birth, how do one convert it to an age variable ? Helpful reply would be highly appreciated ! It's first time I am using this forum. If you need age in years as an integer, then it isn't quite as straightforward. However, we can combine a few functions to convert the date of birth to age. Why is this? The short answer is that Excel rounds its datetime values to the nearest millisecond, while Stata doesn’t. This article will show you how to quickly convert a date of birth (DOB) to age using both traditional formulas and the "new way" with AI assistance. You will learn a handful of formulas to calculate age as a number of complete years, get exact age in years, months and days at today's date or a particular date. Jan 30, 2021 · So, you have converted "dobstr" to "dob" which is a proper Stata date variable. Date format (sense 3) means daily dates being stored numerically and counted relative to 1 January 1960. Jun 14, 2024 · Method 2 – Using the IF Formula to Calculate Age on Specific Date in Excel Occasionally, someone may erroneously enter a Date of Birth that is more recent than the specific date. EXECUTE. I was not able to find any suggestions online or in the statalist (either old or new). I guess the easiest way to do so is to subtract from 2009 the dates of birth of all observations of the column of the dataframe, but I don't know how, because I am still new to R (I have been working with Stata so far). Using the generate command and various clock functions, most any date or time format can be changed into a numeric version of itself. Today, we’re going to embark on a journey through Excel to master the art of converting dates Dec 6, 2018 · How do I get it to recognize my date and solve this mismatch error? EDIT: I went ahead and formatted in Excel as mmm dd, yyyy, but I still want to know how to get STATA to recognize it from MM/DD/YYYY Oct 6, 2016 · Hi, I have a variable (pt_dob) as a string variable (which is red in data editor). Apr 9, 2024 · Learn how to easily calculate age from a date of birth in Excel with our step-by-step guide! Perfect for HR professionals and data analysts. Then, by using the INT function, we can display the age in complete years as follows: Select a blank cell where you want the age to be displayed, input the below formula and press the Enter key. For the first one, in 1982: The import excel command will properly convert Microsoft Excel’s numerically encoded date and times to Stata’s numerically encoded date and times. The post also gives a few examples that are helpful in converting variables to proper STATA dates, which Brought into Stata from a . To do this, you’ll need to use the “ DATEDIF ” function along with the “ TODAY ” function or a specific date. Jul 7, 2025 · H1: DOB to Age Calculator – Convert Your Birthdate to Your Current Age Want to know how old you are based on your date of birth? This DOB to Age Calculator helps you convert any birthdate into an accurate age — instantly and for free. You can have dates in years, months, or even milliseconds. We’ll employ a formula that compares the date of birth of a person to today’s date, and voilà, you’ll have the age. I have tried to convert this dob to stata date (in string format) before converting Step 3 – In the command window, issue the following commands to convert the Excel date variable (that fails to import as a date variable) into a Stata date variable that is a bona fide date variable. Feb 26, 2019 · Hello Everyone! I was wondering if you could assist me in generating an age variable in a panel dataset I am working on. For example, let's consider 2 variables: dateofbirth and datetoday: To create a Stata date variable, you’ll choose a time unit, convert the date to “number of that time unit that have passed since January 1, 1960”, and then apply the appropriate format. Apr 23, 2024 · Step by Step Tutorial: Calculate Age in Excel from DOB Before we start with the steps, know that we’re about to use some Excel magic to turn dates into age. Jun 6, 2019 · Hi, My dataset consist of a year of birth variable i. Skip the cable setup & start watching YouTube TV today for free. 4 days ago · How To Calculate Age from Date of Birth in Months You can calculate a person’s age in Excel from their date of birth to the current date in months. The dates in the spreadsheet are formatted like this: 6/12/57, 8/1/08, etc. This variable should be a float. Excel provides the formula to calculate the age from the date of birth. The INTCK function in SAS returns the number of interval boundaries that lie between two SAS dates, times, or timestamp values. This tutorial covers how SPSS treats Date-Time variables, and how to use the Date & Time Wizard to create and compute variables using dates and times. Feb 20, 2025 · Calculating someone's age from their date of birth is a common task in Excel, whether you're managing employee data, analyzing customer demographics, or tracking membership information. Otherwise, dates in Stata have origin at the beginning of 1960. All the data is inputted via spreadsheet. summarize will be measured in millions, not thousands. Additionally, the TODAY function can be used to automatically update the Mastering Age Calculation in Microsoft Excel Determining a person’s current age based on their date of birth is a frequent and essential requirement in data management. I'm trying to convert them to an appropriate date variable that Stata can recognize, but for the life of me I have no clue on how to do so or where to start. Itworkslikethis: 1. When you load a dataset, you […] Jan 10, 2013 · No description has been added to this video. What I'd like to do is summarize how many people in the total dataset are under 5 years old, how many are 6 - 10 years, 11 - 15 etc. I have in my Stata dataset a variable that is shown in fractional/decimal form to represent the date of birth of participants. Then save $23/month for 2 mos. Feb 10, 2016 · I have a date of birth variable called "EL_DOB" in the format "15 Jan 81" and I am trying to convert it to an "age" variable, where the timestamp is Jan 1 2006. 0f if you want age as whole numbers. The 5 variables corresponding to the years 1982, 1989, 1999, 2009 & 2015. Here dates are stored as string, so you first have to get them right. Learn how to use the date () function with this Stata Quick Tip. Learn to work with dates and times in Stata. Copy and paste the following script inside the Code Editor: Feb 25, 2019 · You need the date on which the survey was held. Smart Date Calculator is your all-in-one toolkit to calculate age, date differences, convert Gregorian (miladi) to Hijri, and Islamic tools like Zakat and Prayer times. This format is useful for adding or subtracting dates and changing the format of date variables. We discuss functions used to obtain Stata dates, including string-to-numeric conversions and conversions among different types of dates and times. 68515 then this person is 11 years and 8 months (12*. Calculate your age with this Free Online Age Calculator. For example, month 01 (january) and year 2022 would become 2022m01. Conversion into elapsed dates Two functions are provided: mdy () and date (). That discussion assumes a general knowledge of Stata's "date and time" variables If you have not already read the very detailed Chapter 24 (Working with dates and times) of the Stata User's Guide PDF, do so now. May 9, 2016 · You may transform date of birth in age just by dividing the difference of two dates by 365. 1913 and 16 Sep. 2. Re: st: how does one automatically calculate the age in years by subtracting the system date from the date of birth? Feb 18, 2022 · includes a discussion of converting UNIX timestamps to Stata Internal Format datetime values. I demonstrate a versatile and straightforward method to calculate age from a birthdate variable in SPSS Jul 11, 2024 · The correct way to handle dates in Stata is to convert them to a number measured in days elapsed since January 1, 1960. Introduction Converting age to date of birth in Excel is a common task that can be incredibly useful in various data analysis and management scenarios. COMPUTE age = CTIME. Converting dates is easy to do. This is an informal overview of several key points in dealing with date and time data in Stata. Feb 12, 2025 · Discover how to convert date of birth to age in Excel using traditional formulas and AI assistants. Upvoting indicates when questions and answers are useful. Find out your age in years, months, and days with our free Date of Birth to Age Calculator. Reverse Age Calculator Our online tools will provide quick answers to your calculation and conversion needs. 25 However that is probably not working because while the year is yyyy, the date_birth is dd/mm/yyyy. Jun 25, 2024 · In Excel, there are various ways to convert a date of birth to age. Dec 17, 2015 · Converting a string date Stata has a wide array of tools to work with dates. In this brief tutorial, we’ll discuss a simple script you can use to derive the number of years, months, and days that a person has aged since their date of birth! The DATEDIFF system function The script we’ll use to derive a person’s age Feb 20, 2023 · Calculate age using date of birth and current date in INTCK function in SAS. To correct that situation, you can use the IF function. The key is to convert it to a real Stata date variable. Years are usually easy to handle. Commands include extracting different date components (such as day, month, year), converting from one date frequency to another (e. For instance I need to convert 15apr1985 to 198504 15jan1999 to 199901 15dec2004 to 200412 etc. Perfect for data analysis. Feb 19, 2016 · Sorry for being unclear. Cleaning STATA dates STATA sees dates from Excel as text, not # Even if you type dates directly into data editor, still seen as text Date conversion Generate a new date variable using the date function Tell it which old variable contains the date you want to convert Give it a format (most common is month, day, year) Try it and look at results Calculate the date of a birthday in the year given by numeric variable y based on a numerically encoded Stata date variable dob that gives date of birth generate bday_future = birthday(dob, y) Oct 22, 2018 · Casibom giriş işlemleri için resmi giriş bağlantısını ve güncel giriş adımlarını tek yerde toplayan güvenli ve hızlı erişim rehberi. Conversion from one kind of date or time to another requires The date () function can convert virtually any date format into elapsed dates, which is the format Stata uses to manipulate date information. Note that the dates represented by the SIF values -16879 and 19617 are 15th Oct. Nov 13, 2006 · I am trying to write script to convert date of birth to the persons age. 25. 25, so analysis time is measured in years. Here, however, I go back to first principles -- what you want is the difference between two monthly dates. I am using STATA 14. Apr 7, 2025 · Convert birthdate to age with INT function We can calculate age by subtracting the birth date from the current date. Then, i want calculate age with date of Oct 15, 2009 · I have a table listing people along with their date of birth (currently a nvarchar(25)) How can I convert that to a date, and then calculate their age in years? My data looks as follows ID Na Prev by Date: st: ARCH & GARCH models with a Student distribution Next by Date: Re: st: HELP! recoding string or long variable into some "text" format Previous by thread: st: ARCH & GARCH models with a Student distribution Next by thread: Re: st: Changing date of birth to age in data editor Index (es): Date Thread Date Thread Jan 8, 2023 · To achieve a more accurate age from the date of birth, you can change the formula in the applied step that first calculates the age. The Century-Month Code system provides an easy way of working with data coded by month and year, and is the primary way in which dates are coded in Demographic and Health Surveys. If you want the age of individuals at "doc", then it appears that you have this from your variable "Birth_age". Knowing the age of a person is often necessary to make decisions. This guide covers storage, conversion, extraction, and duration calculations. cox@durham. Many people find themselves in this situation, especially when working with large datasets that demand quick and accurate age calculations. I would like to convert YYYYMMDD to Stata %tm format. Converting among date types Using dates and times in expressions Computing durations Converting dates and times from other software to Stata dates and times Re: st: how does one automatically calculate the age in years by subtracting the system date from the date of birth? Stata stores dates, times, and dates and times as integers such as −4,102, 0, 82, 4,227, and 1,479,735,745,213. Aug 4, 2024 · After reading this article, you will know the process to convert date of birth to age in excel by using YEARFRAC, DATEDIF function etc. I found SPSS code from Unicef website (MICS data) that does what I want. That is a signal to those interested in this question able to use them. To be honest, I am very new to SPSS so I can understand some commands and operators in SPSS and convert them to Stata such as compute equals generate command in Stata. uk> Prev by Date: RE: st: output several tables into the different sheets of XML file using esttab or estout Next by Date: st: RE: Calculate Age in years and months between 2 dates Previous by thread: st: question about -doseresponse- Next by thread: st: RE: Calculate Age in years and months Sep 11, 2017 · I was trying to gen child_age =. Fast, accurate, and simple for students, professionals, and everyone. In this comprehensive article, I’ll walk you through multiple approaches to calculate age from date of birth in SQL Server. txt file, with values representing those used by another software Convert the numeric date/datetime to a numeric variable corresponding to Stata’s base date (C) Format the numeric variable (B) Apr 25, 2024 · Let’s consider the following dataset (in B4:C14) with people’s Names and their ID Numbers. Add the following formula into that selected cell and press Enter. I create date variable (eg 2017-12-31) for default. Through past posts I was able to figure out the following Stata offers a variety of functions for converting the string dates to the above-listed formats. . rycvh kfimu wmzp ctcxqwe sicm komctm ktvaws jthauc ownpc coz gig puo wzustz towhfbic usc