Invisible killer In 1989, Taiwan University Hospital professors Yeh Ying-kun and Hu Hai-kuo undertook a survey of the surge of psychological illness in Taiwan. Their statistics show that psychological illnesses are present in 20.56 % of the general population, of whom 2.8 % suffer from depression.
台大醫院精神科教授葉英坤和胡海國在一九八九年，針對台灣地區所做的精神疾病盛行率調查發現，各類精神疾病罹患率為百分之二十．五六，其中憂鬱症佔了百分之二．八。