Peat J K, Woolcock A J, Leeder S R, Blackburn C R
Am J Epidemiol. 1980 Jun;111(6):721-7. doi: 10.1093/oxfordjournals.aje.a112950.
During a study to document the effects of childhood respiratory disease and smoking on the lung function of Sydney schoolchildren, the prevalence of children with asthma was documented. Two groups of children aged 12.6 (6590) and 8.9 years (4893) were studied in schools selected at random from the Sydney metropolitan area. Initially parents filled out a questionnaire recording whether the child had ever been treated for asthma or bronchitis by a physician. The children were seen yearly between 1971 and 1976 and a history of asthma and/or bronchitis present duirng the preceding year -as recorded. The cumulative prevalence of asthma until 1976 was significantly higher in boys than in girls in both age groups. Bronchitis was more prevalent than asthma but the difference between girls and boys was less obvious in the younger age group.
在一项记录儿童呼吸道疾病和吸烟对悉尼学童肺功能影响的研究中，记录了哮喘儿童的患病率。从悉尼都会区随机选取学校，对两组年龄分别为12.6岁（6590名）和8.9岁（4893名）的儿童进行了研究。最初，家长填写一份问卷，记录孩子是否曾因哮喘或支气管炎接受过医生治疗。在1971年至1976年期间，每年对这些孩子进行检查，并记录前一年出现的哮喘和/或支气管炎病史。在两个年龄组中，到1976年时，哮喘的累积患病率男孩显著高于女孩。支气管炎比哮喘更普遍，但在较年轻年龄组中，女孩和男孩之间的差异不太明显。
