Hsieh Kue-hsiung, a doctor in the Department of Pediatric Allergies at NTUH, undertook two studies of 150,000 children in Taipei City between the ages of 7 and 15. The studies, conducted in 1974 and 1985, discovered that the rate of illness has increased from 1.3 % to 5.07 %, almost four times over.
台大醫院小兒過敏科醫師謝貴雄曾經在民國六十三年和七十四年，兩度針對台北市十五萬名從七歲到十五歲的學童進行調查，發現得病率從百分之一．三急增到百分之五．零七，成長了將近四倍。