Building a Clinical Prediction Rule to Detect Respiratory Morbidity in Young Children and a Population Monitoring Rule to Measure Respiratory Health Services Use and Health Outcomes.

在加拿大，肺部疾病导致学龄前儿童住院的人数比其他任何疾病都多，而且治疗费用昂贵。尽管许多慢性肺部疾病，如哮喘，似乎在很小的时候就开始了，但它们通常要到几年后才被诊断出来

In Canada, lung diseases cause more hospitalizations among preschoolers than any other disease and are expensive to look after. Even though many chronic lung diseases like asthma seem to begin at a young age, they usually are not diagnosed until a few yea