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FAQ

Can I include cohorts from prior to the 2017 entering cohort in a Year-Over-Year study?

The ACES system relaunched in February 2018. The earliest entering cohort you can study is the 2017 entering cohort.

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ACES

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Phone

800-439-8309
Monday–Friday, 9 a.m.–5 p.m. (ET)

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