Stata command modifiers | If/in/by/bysort statement in Stata

This video covers the topic of stata command modifiers. in this video, we cover if,in,by,bysort commands in Stata. Download Do and Data file from link given below: https://thedatahall.com/stata-command-modifiers-if-in-by-bysort-qualifiers-and-statements-in-stata/ 00:00 Introduction to video 0:34 If Qualifier 1:17 Import Dataset 2:35 If qualifier in detail 3:39 Information needed with if statement 5:47 Other examples of if qualifier 13:52 OR, And Logical operator in if statement 15:52 If Statement 17:57 If statement vs If qualifier 20:20 If and else statement 23:40 In modifier/qualifier 27:46 Bysort, by, sort, by modifier Logical operators in stata: https://youtu.be/JXYgNd96z60