Small sample size of about 1500 Amish men divided across 4 cohorts, all exposed to the great depression. Entry age minimum of 25 years. Sorry, but this is real

Small sample size of about 1500 Amish men divided across 4 cohorts, all exposed to the great depression. Entry age minimum of 25 years. Sorry, but this is really marginal science. There are much stronger demographic and statistical studies of aging and mortality in humans. Here are some alternative examples of stronger studies to explore from PubMed. I keyed my search using the surnames of two well respected longevity demographers (Vaupel and Christensen): https://pubmed.ncbi.nlm.nih.gov/?term=%20vaupel%20christensen&sort=date&page=2 https://pubmed.ncbi.nlm.nih.gov/?term=%20vaupel%20christense...