2019 No https://onlinelibrary.wiley.com/doi/10.1111/ina.12559 Norback, Dan Asia Observational Epidemiology Study Students Middle/Jr High (6-8) Ventilation rates Temperature Humidity Carbon Dioxide (CO2) Particulate Matter (PM) Ozone (O3) Nitrogen Dioxide (NO2) Respiratory symptoms Building ventilation Dampness Indoor environment Respirable particulate matter (PM 10) Redecoration Rhinitis Two-year onset of rhinitis and weekly rhinitis were 26.7% and 13.1%, respectively. PH (p<0.001), CO2 (P<0.01) and PM10 (P<0.01) in the classrooms, PM10 (P<0.010) and NO2 (P<0.05) outside the schools and redecorations (OR=2.25) and dampness/indoor modeled at home (OR = 2.04) were associated with onset of weekly rhinitis. RH (P<0.05) and CO2 (P<0.05) in the classroom and dampness/indoor mold (OR.= 0.67) and environmental tobacco smoke (ETS) at home (OR 0.63) reduced remission of rhinitis).