During the war between the United States and a European country, the United States Navy widely distributed posters throughout the country to recruit soldiers. The most famous advertisement at that time said that the death rate of the United States Navy was lower than that of New York citizens. Facing questions, the responsible Navy official explained: According to statistics, the annual death rate of New York citizens is 16%, and even in wartime, the death rate of U.S. Navy soldiers is only 9%.
New Yorkers in the above statistics include infants, the elderly and patients with poor survival ability best explains the above conclusions.