3 ms·

This was a more ethnically homogenous era for the German nations. West Germany is a reasonable control group.

• account42 4y ago
  Is it? Genetics aren't the only thing that affects livespan.
  • samatman 4y ago
    This is correct, so it's a good thing there is an enormous amount of data about the lives of East and West Germans which can be used to control for those differences as well.
    • mpol 4y ago
      How do you control for differences in air pollution and water pollution, differences in food, differences in stress levels. There are too many unknowns in these calculations.
      • samatman 4y ago
        10 to 12 years is a large effect size.