Peter Wildeford has done the largest non-manual retention analysis I know, which looked at the percentage of people who answered the EA survey using the same email in multiple years. He found retention rates of around 27%, but cautioned that this was inaccurate due to people using different email addresses each year.
Thanks for citing me, and I’m excited for the new data sources you are looking at.
One thing you might want to add is that I looked at two different approaches. You quote the first approach, but the second approach—which I think is more accurate, and is based on comparing the year people say they joined EA versus the survey take rate for that year—shows that roughly ~60% of EAs still stay around after 4-5 years.
Thanks for citing me, and I’m excited for the new data sources you are looking at.
One thing you might want to add is that I looked at two different approaches. You quote the first approach, but the second approach—which I think is more accurate, and is based on comparing the year people say they joined EA versus the survey take rate for that year—shows that roughly ~60% of EAs still stay around after 4-5 years.