Definition
This variable denotes whether the age that was originally recorded, is altered or not. Codes used are 0 meaning not altered; 1 meaning altered because the contents of the original field was non-numeric, thus 6m is transformed to 0.5 and the code is updated to 1; code 2 is invoked if the given relationship is a head of household and marital status is ever-married and the given age is less or equal to 15 then age is reset as missing. Code 3 is invoked when an individual has a recorded relationship which denotes an occupation and the age is given as less than 10. Code 4 is invoked when an individual has an age less than 1. In these cases age is reset as missing