I was looking at my grandsons results and realized that they now included results from Hungary, Slovakia and Romania. I checked their father's results, and his results, too, had been updated to include Hungary (39.9%) and Romania (24.6%). It made me call a couple of friends, including Gail Burkholz. Her results, too, had been updated to specifically identify some German and Irish roots. How did this happen?
First of all, the reference populations remain unchanged. 23andme updated their populations to include 120 additional populations based on user-submitted data. For instance, I may have told 23andme that I have documented evidence that four of my grandparents emigrated from Oldenburg, Germany. They could then compare my DNA results to others making the same claim, and if the statistical analysis corroborated this fact, they may have become a "reference population" for others who claim ancestors from that area. You can read an article describing their methods at: https://customercare.23andme.com/hc/en-us/articles/360003184973
If you have taken a 23andme test, please do the following:
1) Go to your 23andme.com home page.
2) Click on this icon.
3) Click on your "Ancestry Composition."
4) See if there are any subcategories that were not included in your previous reports. For example, this summary subdivided my British and Irish ancestry into "Ireland." French and German was subdivided into "Germany." These results represent a significant improvement over previous results. I have received from 23andme.
5) Click on the "Scientific Details" at the top of the menu. Scroll down and view the 120 additional populations that have been added. This page has a LOT of information. You can adjust the confidence levels, review a list of the additional populations, and click on links describing in detail how these statistics were calculated. At the very bottom of the page, there is a "change log" that will list any changes to you ancestry results that have been revised by date.
Now I'd like to hear from you. I am curious about your experience with this update. Did the new results reflect your paper trail? How accurate did they seem to be? I'd love to hear. Email me at email@example.com or comment on this blog post.
Submitted by Kathy Reed