서울 지하철을 이용하는 승객들의 비악성 호흡기질환과 졸음 증상 유병율 분석

Analysis on Non-malignant Respiratory and Drowsiness Rate Symptom for Passengers Using Subway in Seoul

A self-administrated non-malignant respiratory symptoms questionnaire was sent to 1,099 citizens who take subway running in Seoul city. Symptom prevalence rate was high: 70.6% of subjects reported ?chest tightness?, 43.4%, ?dysphnea?; 76.2%, ?dry cough?; 49.5%, ?runny nose?; 94.4%, ?drowsiness? when they take subway. The groups responding significant higher respiratory and drowsiness symptoms were ?young passengers? (vs elderly passengers), ?the female? (vs male), ?using subway everyday? (vs often), ?using subway for rush-hour time? (vs other than rush-hour), ?using transfer subway? (no transfer), ?using underground track? (vs ground track). Logistic regression model was employed to find personal and subway characteristics affecting non-malignant respiratory symptoms. This study concluded that respiratory diseases history such as asthma, rhinitis, sinusitis, hypersensitivity pneumonitis significantly affect ?dry cough? and ?runny nose?. Thus, passengers with respiratory diseases history shows 2.8 times greater ?dry cough? than and 3.4 times greater ?runny nose?than those passengers without respiratory diseases history felt. This results indicated that several measures have to take to protect sensitive groups such as passengers with respiratory diseases, children and elderly people. Also passenger who use to transfer shows 1.7 times higher runny nose symptoms than that passenger who do not transfer felt.