https://psychnews.psychiatryonline.org/doi/10.1176/pn.41.8.0002
Article is actually about the risk factors associated with physical and “nervous” illnesses among veterans of the Union army in the Civil War. Authors analyzed over 15,000 randomly selected complete medical records of Union soldiers to determine what factors were more likely to produce cardiac, gastrointestinal diseases and “nervous” (what we would break down to mental or neurological disease today) disease. The most significant factor determining if you developed a nervous disease is if you were wounded.
