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.

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Strange error of function usubinstr???

Strange error of function usubinstr???

Monday, November 1, 2021 Data Cleaning Data management Data Processing
Hi! I want to use the function usubinstr() to replace unicode substring "我爱" in Unicode string variable named str which contains ...
comparing two linear regression lines

comparing two linear regression lines

4:23 AM Data Cleaning Data management Data Processing
I am comparing the glomerular filtration rate (continuous) measured by creatinine clearance (gold standard, x) and by two other methods (new...
Percentage of a variable depending on different income bins

Percentage of a variable depending on different income bins

4:23 AM Data Cleaning Data management Data Processing
I'm trying to find out depending on the variation of income what percentage of a particular income bin can afford one/multiple/no health...
Deleting number of observations below 3 in histogram?

Deleting number of observations below 3 in histogram?

3:23 AM Data Cleaning Data management Data Processing
Hi, How can I delete the bars in the histogram if there is less or equal to 3 observations? The histogram should show the age of mothers ...
Trimmed Mean

Trimmed Mean

3:23 AM Data Cleaning Data management Data Processing
Hi Stata Community, I hope you are all doing well. I am afraid I have a question regarding the calculation of the mean inside a centile ra...
Looping csv file - save as dta with file name

Looping csv file - save as dta with file name

3:23 AM Data Cleaning Data management Data Processing
Dear all, I'm trying to work on two loops over 200 files: 1- First loop open the csv and save as dta keeping as file name the same on...
gen dummy with missing data

gen dummy with missing data

Sunday, October 31, 2021 Data Cleaning Data management Data Processing
Dear All, Suppose that I run the code Code: sysuse auto, clear gen d = (rep78 > 2) & !missing(rep78) i.e., d-=1, if rep78 ...
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