Depression好比傷風感冒. 見CDC 數據:
http://www.google.com/imgres?imgurl=http://www.cdc.gov/nchs/data/databriefs/db07_fig1.gif&imgrefurl=http://www.cdc.gov/nchs/data/databriefs/db07.htm&h=340&w=440&sz=24&tbnid=XbG2F3m8V37EZM:&tbnh=90&tbnw=116&prev=/search%3Fq%3Ddepression%2B%2Bpercentage%26tbm%3Disch%26tbo%3Du&zoom=1&q=depression++percentage&docid=PfpzgwREs7X4iM&hl=en&sa=X&ei=Wqk9T9SWN4L30gHe1ozTBw&ved=0CFcQ9QEwBA&dur=2882
亞裔比例可能更高, 但是諱疾忌醫.