Finding F-1290

“RESULTS: A total of 1,993 pupils (90.2%) participated; 1.8% had cumulative asthma, 8.4% wheezing, 29.8% had daytime attacks of breathlessness.”

Lotz Asthmatic Symptoms among Pupils in Relation to Winter Indoor and Outdoor Air Pollution in Schools in Taiyuan, China (2008). Environmental health perspectives. Page 1. CKB 6640

Structure

Population: pupils aged 11 to 15
Setting: classroom, CN (winter)
Study design: cross-sectional study in a coal-burning city in northern China: a questionnaire on respiratory health and home environment was answered by 1,993 pupils aged 11 to 15 in ten urban schools of Taiyuan, and indoor and outdoor air pollutants and climate factors were measured in the same schools in winter (class 4)
Effect: prevalence 29.8
Sample: 1,993 children
Caveat: reported symptoms from a questionnaire, not a clinical diagnosis; the register has no slug for breathlessness, so the symptom is named in the comparator

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.