Question
In the 2000 Survey of Labour and Income Dynamics there is a variable "immst15" (immigrant flag). Marginals are as follows:
1 yes 3,641
2 no 11,608
7 don't know 42,192
We're assuming that the "don't know" category should actually be "not applicable" and also that it refers to persons born in Canada. Is that a valid assumption?
Answer
Immigration status is available only for persons living in urban size of 500,000 and higher all other individuals are set to don't know for confidentiality reasons.
Follow up
Is there not some way that another code could be used that could be specifically for "confidentiality protection"? A code of "don't know" should be reserved for persons who indicate that as their response. This undermines confidence in coding.
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