In his "Report on the Health Situation in Hong Kong," written in 1882, a Briton named Chadwick noted that the average life expectancy of adults in Hong Kong was 43 years. In the 1840s, average life expectancy for people in Britain was already 55.
英國人查得．威克在一八八二年所做的《香港衛生情況報告》指出，當時香港成年人的平均壽命為四十三歲，而一八四○年代，英國成年人的平均壽命已達五十五歲。