ALorithms for Generating address histories and Exposures
An automated protocol for assigning early life exposures to longitudinal cohort studies
Errors and Limitations
by Kevin Garwood
Performance
ALGAE is driven off daily exposure records and for the later life analysis, we
converted annual average exposures for each location into daily exposures that covered
the same period. This significantly increased the amount of time the protocol needed
to run. However, the reason why both early and later life analyses use daily exposure
records is to simplify the code base. Whereas before ALGAE used daily exposures for
the early life analysis and weighted annual average exposures for address periods in
the later life analysis, now both analyses share exactly the same code for exposure
calculations. This has provided a great benefit for simplifying testing.