Achieving consistency with Dorn's occ panel about ad-replication HOT 1 OPEN

When Dorn prepared his occupation panel, IPUMS had been using 3-digit OCC codes. However, more-recent pulls of the ACS part of the data come with 4-digit OCC codes.

Fortunately, I believe with the 2005 ACS data at least, these new codes are simply the original codes with an appended zero--and we can get back the original Dorn-compatible codes by just dividing by ten (here's one reference on it e.g.).

You bring up a good point in general though--in the post-2005 ACS datasets, I believe these codes do more than append a zero. And so for, say, any potential future extensions of the paper, it unfortunately may not be possible to take Dorn's ACS occupation panel and simply apply it to the given ACS data year; I think we'd need to either create a new panel, or hope that Dorn chooses to refresh his.

from ad-replication.