BJ Data Tech Solution

Specialized on Data processing, Data management Implementation plan, Data Collection tools - electronic and paper base, Data cleaning specifications, Data extraction, Data transformation, Data load, Analytical Datasets, and Data analysis. BJ Data Tech Solutions teaches on design and developing Electronic Data Collection Tools using CSPro, and STATA commands for data manipulation. Setting up Data Management systems using modern data technologies such as Relational Databases, C#, PHP and Android.

converting string to date returns missing values
converting string to date returns missing values

Hello,
I have a string variable (str10) which I want to convert into date so i can add and subtract days.
Array

This string variable is formatted in the ddmmyyyy format but some of the values are recoded as "NA" or "na" if the date is missing. When I use
gen new_date_variable = date(date_variable, dmy)

Stata just returns missing values for all.

Could anyone suggest what is the problem and how should i rectify ? Many Thanks

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