Multi variable linear regression
Hello everyone, I am working on a multivariable linear regression model for Outcome A using data from 50 countries worldwide.I have Data on outcome A in all the 50 countries and through 20 years in each country.So total, I have about 1000 different values of A. For the suggested predictors, I have the same as well.But given that each country has its characteristics, I do not feel comfortable treat...