A case-population sample extracted from American Community Survey (ACS) 2018, restricted to white males residing in California with at least a bachelor's degree. The original ACS dataset is not from case-population sampling, but this case-population sample is obtained by the following procedure. The case sample is composed of 921 individuals whose income is top-coded. The control sample of equal size is randomly drawn with replacement from all observations and its top-coded status is coded missing. Age is restricted to be between 25 and 70.
A data frame with 1842 rows and 4 variables:
age, in years
industry code, in four digits
1 if BA or higher; 0 otherwise
1 if an observation belongs to the case sample; NA otherwise
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